Trial Outcomes & Findings for True Functional Restoration and Analgesia in Non-Radicular Low Back Pain (NCT NCT01455519)

NCT ID: NCT01455519

Last Updated: 2017-10-24

Results Overview

The McGill Pain Questionnaire - Short Form (MPQ-SF) is a well-validated pain measure that permits separation of the sensory and affective components of pain, which are added together to compute a total score. The scale ranges from 0-45 (0=no pain, 45=the most pain).

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

51 participants

Primary outcome timeframe

Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Results posted on

2017-10-24

Participant Flow

51 subjects were enrolled at baseline. 13 withdrew from the study after visit 1, and 3 no longer met criteria at visit 2.

Participant milestones

Participant milestones
Measure
Sugar Pill
Subjects may receive a pill with no medicine.
Hydromorphone ER
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Overall Study
STARTED
12
23
Overall Study
COMPLETED
8
18
Overall Study
NOT COMPLETED
4
5

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

True Functional Restoration and Analgesia in Non-Radicular Low Back Pain

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Sugar Pill
n=12 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=23 Participants
Subjects received study drug: Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Total
n=35 Participants
Total of all reporting groups
Age, Continuous
49.8 years
STANDARD_DEVIATION 10.7 • n=5 Participants
46.6 years
STANDARD_DEVIATION 9.2 • n=7 Participants
47.7 years
STANDARD_DEVIATION 9.7 • n=5 Participants
Sex: Female, Male
Female
5 Participants
n=5 Participants
12 Participants
n=7 Participants
17 Participants
n=5 Participants
Sex: Female, Male
Male
7 Participants
n=5 Participants
11 Participants
n=7 Participants
18 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants
n=5 Participants
0 Participants
n=7 Participants
2 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
10 Participants
n=5 Participants
23 Participants
n=7 Participants
33 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
8 Participants
n=5 Participants
13 Participants
n=7 Participants
21 Participants
n=5 Participants
Race (NIH/OMB)
White
1 Participants
n=5 Participants
8 Participants
n=7 Participants
9 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
n=5 Participants
2 Participants
n=7 Participants
4 Participants
n=5 Participants
Body Mass Index
32.8 kg/m2
STANDARD_DEVIATION 10.4 • n=5 Participants
29.3 kg/m2
STANDARD_DEVIATION 8.4 • n=7 Participants
30.5 kg/m2
STANDARD_DEVIATION 9.1 • n=5 Participants
Duration of Pain
12.6 years
STANDARD_DEVIATION 12.3 • n=5 Participants
8.7 years
STANDARD_DEVIATION 7.8 • n=7 Participants
10.0 years
STANDARD_DEVIATION 9.3 • n=5 Participants

PRIMARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

The McGill Pain Questionnaire - Short Form (MPQ-SF) is a well-validated pain measure that permits separation of the sensory and affective components of pain, which are added together to compute a total score. The scale ranges from 0-45 (0=no pain, 45=the most pain).

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in McGill Pain Questionnaire - Short Form
-0.73 units on a scale
Standard Error 2.33
-3.78 units on a scale
Standard Error 1.7

PRIMARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Visual Analogue Scale is a self report pain scale on a scale 0(no pain) to 100 (the worst pain imaginable).

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in VAS
-10.57 units on a scale
Standard Error 9.54
-10.67 units on a scale
Standard Error 6.91

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Anxiety scores were collected at least two data points. The Pain Anxiety Symptoms Scale (PASS) is a scale from 0 - 100, where 0 = no anxiety and 100 = the most anxiety.

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in PASS
-7.14 units on a scale
Standard Error 2.94
-5.85 units on a scale
Standard Error 2.21

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

The Pain Disability Index (PDI) is a seven-item, validated instrument that assesses perceived disability in seven key life areas. It provides a total disability score, and is an indirect measure of self efficacy. The Pain Disability Scale is a scale from 0 - 70, where 0 = no Disability and 70 = the most Disability.

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in Pain Disability
-9.84 units on a scale
Standard Error 4.56
-9.25 units on a scale
Standard Error 3.36

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Time to climb 1 flight of stairs

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in Stair Climb Time
1.28 seconds
Standard Error 1.08
-1.25 seconds
Standard Error 0.8

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Treadmill distance walked in 6 minutes

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in Treadmill Distance Walked
0.02 miles
Standard Error 0.02
0.02 miles
Standard Error 0.01

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Sit to stand repetitions completed in 1 minute

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in Sit to Stand Repetitions
-1.07 number of repetitions
Standard Error 1.52
.54 number of repetitions
Standard Error 1.14

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Distance from fingers to Floor when bending forward. A functional test of flexibility

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in Distance to Floor
-4.61 centimeters
Standard Error 3.03
-4.02 centimeters
Standard Error 2.26

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Time to lift 13 pound box to floor and back up to table.

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in Time to Lift Box
-1.45 seconds per lift
Standard Error 1.13
-1.06 seconds per lift
Standard Error 0.8

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Numeric Rating Scale (NRS) pain score was given verbally after completing functional stair climb test on a scale 0-10 (0=none, and 10=the worst).

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in NRS After Stair Climb
0.04 NRS pain score
Standard Error 0.23
-0.11 NRS pain score
Standard Error 0.17

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Numeric Rating Scale (NRS) pain score was given verbally after completing functional treadmill walk test on a scale 0-10 (0=none, and 10=the worst).

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in NRS After Treadmill Walk
0.1 NRS pain score
Standard Error 0.44
-0.51 NRS pain score
Standard Error 0.32

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Numeric Rating Scale (NRS) pain score was given verbally after completing functional sit to stand test on a scale 0-10 (0=none, and 10=the worst).

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in NRS After Sit to Stand Repetitions
-0.24 NRS pain score
Standard Error 0.34
-0.57 NRS pain score
Standard Error 0.25

SECONDARY outcome

Timeframe: Collected at 2 visits over 8-10 weeks: Visit 1 and Visit 4. Change values were calculated from Baseline to post intervention

Numeric Rating Scale (NRS) pain score was given verbally after completing functional box lift test on a scale 0-10 (0=none, and 10=the worst).

Outcome measures

Outcome measures
Measure
Sugar Pill
n=8 Participants
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=18 Participants
Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
Change in NRS After Box Lift
0.39 NRS pain score
Standard Error 0.58
-0.43 NRS pain score
Standard Error 0.36

Adverse Events

Sugar Pill

Serious events: 0 serious events
Other events: 5 other events
Deaths: 0 deaths

Hydromorphone ER

Serious events: 0 serious events
Other events: 15 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Sugar Pill
n=12 participants at risk
Subjects may receive a pill with no medicine.
Hydromorphone ER
n=23 participants at risk
Subjects received study drug: Hydromorphone ER Hydromorphone ER: Total target dose of 32 mg/day. All subjects will have a lead in for 2 weeks; then begin a 'forced' 2-week up-titration schedule as follows: 8mg/d (1 pill, 5 days), 16mg mg/d (2 pills, 5 days), and 24mg/d (3 pills, 5 days) then finally 32 mg/d (4 pills a day) for the 'stable dose' phase of the study, or identical placebo pills. If intolerable side effects occur, the dose may be reduced to last tolerable does, a minimum of 8 mg/day (or one pill a day), at the discretion of the PI. Subjects unable to tolerate 8 mg/day will be discontinued from the study. A 2-week down-titration will be used.
General disorders
nausea
0.00%
0/12
26.1%
6/23
General disorders
fatigue
0.00%
0/12
17.4%
4/23
General disorders
drowsiness
8.3%
1/12
39.1%
9/23
General disorders
vomiting
8.3%
1/12
8.7%
2/23
General disorders
trouble sleeping
0.00%
0/12
4.3%
1/23
General disorders
itchiness
16.7%
2/12
4.3%
1/23
General disorders
dizziness
0.00%
0/12
4.3%
1/23
Gastrointestinal disorders
stomach pain
8.3%
1/12
0.00%
0/23
General disorders
diarrhea
0.00%
0/12
4.3%
1/23
Ear and labyrinth disorders
ear infection
0.00%
0/12
4.3%
1/23
General disorders
lack of appetite
0.00%
0/12
4.3%
1/23
Gastrointestinal disorders
heartburn
0.00%
0/12
4.3%
1/23

Additional Information

Center for Pain Studies

Rehabilitation Institute of Chicago

Phone: 312.238.5654

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place