Trial Outcomes & Findings for Evaluation of Effectiveness and Tolerability of Tapentadol Hydrochloride in Subjects With Severe Pain Due to Osteoarthritis Taking Either WHO Step I or Step II Analgesics or no Regular Analgesic (NCT NCT00983073)

NCT ID: NCT00983073

Last Updated: 2019-10-21

Results Overview

For this pain assessment, the participant was to indicate the level of average pain experienced over the previous 3 days on an 11-point Numerical Rating Scale(NRS) where a score of 0 indicated "no pain" and a score of 10 indicated "pain as bad as you can imagine". The value indicates the change from the baseline value on the 0 to 10 scale. A Negative value indicates a reduction in pain intensity from the baseline average pain intensity.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

224 participants

Primary outcome timeframe

Baseline to end of week 6

Results posted on

2019-10-21

Participant Flow

The enrollment of the first participant was on the 21 September 2009 and was completed on 02 September 2010 (when the last subject completed the last follow-up examination).

The Trial had a duration of 13 weeks. The one week Observation Period did not involve dosing with Tapentadol. For Tapentadol analyses purposes the first 6 weeks of dosing with Tapentadol are reported as one period, Titration and Optimal Dose Period. The last 6 weeks on Tapentadol are reported as the Maintenance Period.

Participant milestones

Participant milestones
Measure
Tapentadol PR
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Observation Period
STARTED
224
Observation Period
COMPLETED
200
Observation Period
NOT COMPLETED
24
Titration and Optimal Dose Period
STARTED
200
Titration and Optimal Dose Period
COMPLETED
160
Titration and Optimal Dose Period
NOT COMPLETED
40
Maintenance Period
STARTED
160
Maintenance Period
COMPLETED
144
Maintenance Period
NOT COMPLETED
16

Reasons for withdrawal

Reasons for withdrawal
Measure
Tapentadol PR
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Titration and Optimal Dose Period
Adverse Event
19
Titration and Optimal Dose Period
Withdrawal by Subject
11
Titration and Optimal Dose Period
Lack of Efficacy
5
Titration and Optimal Dose Period
Non-Compliance
1
Titration and Optimal Dose Period
Other reason
4
Maintenance Period
Adverse Event
5
Maintenance Period
Withdrawal by Subject
2
Maintenance Period
Lack of Efficacy
2
Maintenance Period
Other Reason
7

Baseline Characteristics

Evaluation of Effectiveness and Tolerability of Tapentadol Hydrochloride in Subjects With Severe Pain Due to Osteoarthritis Taking Either WHO Step I or Step II Analgesics or no Regular Analgesic

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Tapentadol PR
n=200 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Age, Customized
40 years and older
67.4 years
STANDARD_DEVIATION 10.8 • n=5 Participants
Sex: Female, Male
Female
135 Participants
n=5 Participants
Sex: Female, Male
Male
65 Participants
n=5 Participants
Region of Enrollment
France
24 participants
n=5 Participants
Region of Enrollment
Poland
6 participants
n=5 Participants
Region of Enrollment
Spain
57 participants
n=5 Participants
Region of Enrollment
Germany
91 participants
n=5 Participants
Region of Enrollment
United Kingdom
22 participants
n=5 Participants
Baseline Average Pain Intensity
7.5 Units on a scale
STANDARD_DEVIATION 1.08 • n=5 Participants

PRIMARY outcome

Timeframe: Baseline to end of week 6

Population: All participants who had at least one dose of study medication and one post-baseline pain intensity assessment. Last Observation Carried Forward (LOCF).

For this pain assessment, the participant was to indicate the level of average pain experienced over the previous 3 days on an 11-point Numerical Rating Scale(NRS) where a score of 0 indicated "no pain" and a score of 10 indicated "pain as bad as you can imagine". The value indicates the change from the baseline value on the 0 to 10 scale. A Negative value indicates a reduction in pain intensity from the baseline average pain intensity.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=193 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
The Primary Endpoint is Defined as the Change From Week -1 of the Average Pain Intensity Score on an 11-point NRS-3 at Week 6.
-3.4 Units on a scale
Standard Deviation 2.10

SECONDARY outcome

Timeframe: Baseline

For this pain assessment, the participant was to indicate the level of average pain experienced over the previous 3 days on an 11-point Numerical Rating Scale (NRS)where a score of 0 indicated "no pain" and a score of 10 indicated "pain as bad as you can imagine".

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=195 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Average Pain Intensity Before the Start of Tapentadol Treatment
7.5 units on a scale
Standard Deviation 1.08

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available.

For this pain assessment, the participant was to indicate the level of average pain experienced over the previous 3 days on an 11-point Numerical Rating Scale(NRS) where a score of 0 indicated "no pain" and a score of 10 indicated "pain as bad as you can imagine". The value indicates the change from the baseline value on the 0 to 10 scale. A Negative value indicates a reduction in pain intensity from the baseline average pain intensity.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=160 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Change in Average Pain Intensity After 6 Weeks of Tapentadol PR Treatment
-3.8 units on a scale
Standard Deviation 1.94

SECONDARY outcome

Timeframe: Baseline; End of Week 12 (12 Weeks)

Population: Number of participants with data available.

For this pain assessment, the participant was to indicate the level of average pain experienced over the previous 3 days on an 11-point Numerical Rating Scale(NRS) where a score of 0 indicated "no pain" and a score of 10 indicated "pain as bad as you can imagine". The value indicates the change from the baseline value on the 0 to 10 scale. A Negative value indicates a reduction in pain intensity from the baseline average pain intensity.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Change in Average Pain Intensity After 12 Weeks of Tapentadol PR Treatment
-4.4 units on a scale
Standard Deviation 1.91

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available.

The participant scored the EuroQol-5. This is a five dimensional health state classification. Each dimension is assessed on a 3-point ordinal scale (1=no problems, 2=some problems, 3=extreme problems). The responses to the five EQ-5D dimensions were scored using a utility-weighted algorithm to derive an EQ-5D health status index score between 0 to 1, with 1.00 indicating "full health" and 0 representing dead. The positive values indicate that during the study the health status improved.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=159 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
EuroQol-5 (EQ-5D) Health Status Index Outcome Over Time
0.23 Units on a scale
Standard Deviation 0.30

SECONDARY outcome

Timeframe: Baseline; End of Week 12 (12 Weeks)

Population: Number of participants with data available

The participant scored the EuroQol-5. This is a five dimensional health state classification. Each dimension is assessed on a 3-point ordinal scale (1=no problems, 2=some problems, 3=extreme problems). The responses to the five EQ-5D dimensions were scored using a utility-weighted algorithm to derive an EQ-5D health status index score between 0 to 1, with 1.00 indicating "full health" and 0 representing dead. The positive values indicate that during the study the health status improved.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
EuroQol-5 (EQ-5D) Health Status Index Outcome Over Time
0.27 Units on a scale
Standard Deviation 0.34

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available.

EuroQoL-5D Health State Visual Analog Scale (VAS) is a participant rated questionnaire to assess health-related quality of life in terms of a single index value. The VAS component rates current health state on a scale from 0 (worst imaginable health state) to 100 (best imaginable health state); higher scores indicate a better health state. The values indicated represent the change from the baseline, a positive value indicates an improvement.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=158 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Change in Health Related Quality of Life: EuroQol-5D Health State Visual Analog Scale (VAS)
15.8 Units on a scale
Standard Deviation 22.8

SECONDARY outcome

Timeframe: Baseline, End of Week 12 (12 Weeks)

Population: Number of participants with data available

EuroQoL-5D Health State Visual Analog Scale (VAS) is a participant rated questionnaire to assess health-related quality of life in terms of a single index value. The VAS component rates current health state on a scale from 0 (worst imaginable health state) to 100 (best imaginable health state); higher scores indicate a better health state. The values indicated represent the change from the baseline, a positive value indicates an improvement.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Change in Health Related Quality of Life: EuroQol-5D Health State Visual Analog Scale (VAS)
19.5 Units on a scale
Standard Deviation 26.6

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available

In the Patient Global Impression of Change (PGIC) the participant indicates the perceived change over the treatment period. The participant is requested to choose one of seven categories. Scores range from very much improved to very much worse.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=159 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Patient Global Impression of Change
Very Much Improved
14 Participants
Patient Global Impression of Change
Much Improved
75 Participants
Patient Global Impression of Change
Minimally Improved
58 Participants
Patient Global Impression of Change
No Change
8 Participants
Patient Global Impression of Change
Minimally Worse
2 Participants
Patient Global Impression of Change
Much Worse
2 Participants
Patient Global Impression of Change
Very Much Worse
0 Participants

SECONDARY outcome

Timeframe: Baseline; End of Week 12 (12 Weeks)

Population: Number of participants with data available

In the Patient Global Impression of Change (PGIC) the participant indicates the perceived change over the treatment period. The participant is requested to choose one of seven categories. Scores range from very much improved to very much worse.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Patient Global Impression of Change
Very Much Improved
23 Participants
Patient Global Impression of Change
Much Improved
64 Participants
Patient Global Impression of Change
Minimally Improved
33 Participants
Patient Global Impression of Change
No Change
5 Participants
Patient Global Impression of Change
Minimally Worse
0 Participants
Patient Global Impression of Change
Much Worse
0 Participants
Patient Global Impression of Change
Very Much Worse
0 Participants

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available

In the Clinical Global Impression of Change (CGIC) the clinician indicates the perceived change over the treatment period. The clinician is requested to choose one of seven categories. Scores range from very much improved to very much worse.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=160 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Clinical Global Impression of Change
Very Much Improved
14 Participants
Clinical Global Impression of Change
Much Improved
88 Participants
Clinical Global Impression of Change
Minimally Improved
47 Participants
Clinical Global Impression of Change
No Change
7 Participants
Clinical Global Impression of Change
Minimally Worse
2 Participants
Clinical Global Impression of Change
Much Worse
1 Participants
Clinical Global Impression of Change
Very Much Worse
1 Participants

SECONDARY outcome

Timeframe: Baseline; End of Week 12 (12 Weeks)

Population: Number of participants with data available

In the Clinical Global Impression of Change (CGIC) the clinician indicates the perceived change over the treatment period. The clinician is requested to choose one of seven categories. Scores range from very much improved to very much worse.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Clinical Global Impression of Change
Very Much Improved
28 Participants
Clinical Global Impression of Change
Much Improved
68 Participants
Clinical Global Impression of Change
Minimally Improved
27 Participants
Clinical Global Impression of Change
No Change
2 Participants
Clinical Global Impression of Change
Minimally Worse
0 Participants
Clinical Global Impression of Change
Much Worse
0 Participants
Clinical Global Impression of Change
Very Much Worse
0 Participants

SECONDARY outcome

Timeframe: Baseline

Population: Number of participants with data available.

Participants were requested to rate their previous analgesic medication on a 5-point scale. Previous medication was rated as excellent, very good, good, fair and poor.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=194 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Participant's Satisfaction With Previous Analgesic Treatment
Excellent
0 participants
Participant's Satisfaction With Previous Analgesic Treatment
Very Good
0 participants
Participant's Satisfaction With Previous Analgesic Treatment
Good
4 participants
Participant's Satisfaction With Previous Analgesic Treatment
Fair
132 participants
Participant's Satisfaction With Previous Analgesic Treatment
Poor
62 participants

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available

Participants were requested to rate their tapentadol (new) analgesic medication on a 5-point scale. The medication was rated as excellent, very good, good, fair and poor.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=160 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Excellent
16 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Very Good
39 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Good
88 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Fair
17 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Poor
0 participants

SECONDARY outcome

Timeframe: Baseline; End of Week 12 (12 Weeks)

Population: Number of participants with data available

Participants were requested to rate their tapentadol (new) analgesic medication on a 5-point scale. The medication was rated as excellent, very good, good, fair and poor.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Excellent
16 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Very Good
45 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Good
54 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Fair
9 participants
Participant's Satisfaction With New Analgesic Treatment, i.e Tapentadol.
Poor
1 participants

SECONDARY outcome

Timeframe: Baseline

Population: Number of participants with data available

Western Ontario McMaster Questionnaire (WOMAC) Global Score: WOMAC is measured with a Likert ordinal scale (the participant gives one of 5 possible answers) A higher score indicate that a symptom is bothersome or disabling. The WOMAC is a self-administered questionnaire and has 24 questions: Pain, Stiffness and Physical Function. The possible scores range from 0-20 for pain, 0-8 for stiffness, 0-68 for physical function and these are then summed 0-96 for the global score. A lower score indicates a lower level of symptoms and or disability.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=195 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Baseline Western Ontario McMaster Questionnaire (WOMAC) Global Score Assessing Pain, Disability and Joint Stiffness of the Knee
53.6 units on a scale
Standard Deviation 14.58

SECONDARY outcome

Timeframe: Baseline; End of Week 6 (6 Weeks)

Population: Number of participants with data available

The WOMAC is a self-administered questionnaire and has 24 questions: Pain, Stiffness and Physical Function. The possible scores range from 0-20 for pain, 0-8 for stiffness, 0-68 for physical function and these are then summed 0-96 for the global score. The negative value indicates that there has been an improvement since baseline, the higher the value the greater the change since baseline.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=159 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Change From Baseline in the Western Ontario McMaster Questionnaire (WOMAC) Global Score Assessing Pain, Disability and Joint Stiffness of the Knee Over the Last Week at Week 6
-21.0 units on a scale
Standard Deviation 18.82

SECONDARY outcome

Timeframe: Baseline; End of Week 12 (12 Weeks)

Population: Number of participants with data available

The WOMAC is a self-administered questionnaire and has 24 questions: Pain, Stiffness and Physical Function. The possible scores range from 0-20 for pain, 0-8 for stiffness, 0-68 for physical function and these are then summed 0-96 for the global score. The negative value indicates that there has been an improvement since baseline, the higher the value the greater the change since baseline.

Outcome measures

Outcome measures
Measure
Tapentadol PR
n=125 Participants
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Change From Baseline in the Western Ontario McMaster Questionnaire (WOMAC) Global Score Assessing Pain, Disability and Joint Stiffness of the Knee Over the Last Week at Week 12
-27.6 units on a scale
Standard Deviation 19.52

Adverse Events

Tapentadol PR

Serious events: 8 serious events
Other events: 142 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Tapentadol PR
n=200 participants at risk
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Cardiac disorders
Angina unstable
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Cardiac disorders
Myocardial infarction
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Infections and infestations
Cellulitis
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Infections and infestations
Respiratory Tract Infection
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Infections and infestations
Urinary tract infection
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Injury, poisoning and procedural complications
Radius fracture
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Musculoskeletal and connective tissue disorders
Back pain
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Nervous system disorders
Facial palsy
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Psychiatric disorders
Panic attack
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Vascular disorders
Deep vein thrombosis
0.50%
1/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.

Other adverse events

Other adverse events
Measure
Tapentadol PR
n=200 participants at risk
All participants started with 50 mg tapentadol hydrochloride PR (twice daily). The dose of tapentadol hydrochloride PR was adjusted to a level that provided adequate analgesia (upwards or downwards on a weekly basis as needed). After 5 weeks the dose of tapentadol hydrochloride PR was kept stable. Participants were permitted a maximum dose of 250 mg twice a day (500 mg total daily dose). Tapentadol hydrochloride IR 50 mg (no more than twice daily; at least 4 hours apart) was considered as medication for acute pain episodes however, participants were not permitted to dose tapentadol hydrochloride IR once 500 mg tapentadol hydrochloride PR dose was reached.
Gastrointestinal disorders
Constipation
10.5%
21/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Gastrointestinal disorders
Diarrhoea
5.5%
11/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Gastrointestinal disorders
Dry Mouth
10.0%
20/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Gastrointestinal disorders
Nausea
13.0%
26/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Gastrointestinal disorders
Vomiting
5.0%
10/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
General disorders
Fatigue
10.5%
21/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Infections and infestations
Nasopharyngitis
8.0%
16/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Nervous system disorders
Dizziness
12.0%
24/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Nervous system disorders
Headache
6.5%
13/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.
Nervous system disorders
Somnolence
7.0%
14/200 • From first tapentadol dose to the end of week 12 of tapentadol treatment.

Additional Information

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