Trial Outcomes & Findings for Evaluation of National Cancer Institute (NCI) Smoking Intervention Resources (NCT NCT01342523)

NCT ID: NCT01342523

Last Updated: 2015-10-14

Results Overview

Abstinence will be defined as 7-day point prevalence.

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

1034 participants

Primary outcome timeframe

Measured after the 3 month follow up assessment

Results posted on

2015-10-14

Participant Flow

The recruitment period ran from November 28, 2011 through March 26, 2013. All study participants were recruited through the portal to the smokefree.gov website.

Prior to randomization, potential participants were asked to make a "confirmation" call to an automated answering system to confirm willingness to perform study procedures. The call was intended to increase the likelihood that individuals would take treatment and follow-up calls. Randomization occurred immediately after the confirmation call.

Participant milestones

Participant milestones
Measure
No CIS/No Loz/No Email/Lite Website/Brief Booklet
CIS/No Loz/No Email/Lite Website/Brief Booklet
no CIS/Loz/No Email/Lite Website/Brief Booklet
No CIS/no Loz/Email/Lite Website/Brief Booklet
No CIS/No Loz/No Email/Full Website/Brief Booklet
No CIS/No Loz/No Email/Lite Website/Full Booklet
CIS/Loz/No Email/Lite Website/Brief Booklet
CIS/No Loz/Emails/Lite Website/Brief Booklet
CIS/No Loz/no Email/Full Website/Brief Booklet
CIS/No Loz/no Email/Lite Website/Full Booklet
No CIS/Loz/Emails/Lite Website/Brief Booklet
No CIS/Loz/No Emails/Lite Website/Full Booklet
No CIS/Loz/No Emails/Full Website/Lite Booklet
no CIS/no Loz/Emails/Full Website/Brief Booklet
no CIS/no Loz/Emails/Lite Web/Full Booklet
no CIS/no Loz/no Email/Full Website/Full Booklet
CIS/Loz/Emails/Lite Website/Brief Booklet
CIS/Loz/no Email/Full Website/Brief Booklet
CIS/Loz/no Email/Lite Website/Full Booklet
CIS/no Loz/Emails/Full Website/Brief Booklet
CIS/no Loz/Emails/Lite Website/Full Booklet
CIS/no Loz/no Email/Full Website/Full Booklet
No CIS/Loz/Emails/Full Website/Brief Booklet
No CIS/Loz/Emails/Lite Website/Full Booklet
No CIS/Loz/no Emails/Full Website/Full Booklet
no CIS/no Loz/Emails/Full Website/Full Booklet
CIS/Loz/Emails/Full Website/Brief Booklet
CIS/Loz/Emails/Lite Website/Full Booklet
No CIS/Loz/Emails/Full Website/Full Booklet
CIS/no Loz/Emails/Full Website/Full Booklet
CIS/Loz/no Emails/Full Website/Full Booklet
CIS/Loz/Emails/Full Website/Full Booklet
Overall Study
STARTED
35
32
36
33
36
36
22
27
28
28
38
38
39
38
38
32
29
27
21
27
29
30
36
36
37
38
34
31
35
29
31
28
Overall Study
COMPLETED
34
32
36
32
36
36
22
27
28
28
38
36
39
36
37
32
28
27
21
27
29
30
36
35
36
36
33
30
34
28
30
27
Overall Study
NOT COMPLETED
1
0
0
1
0
0
0
0
0
0
0
2
0
2
1
0
1
0
0
0
0
0
0
1
1
2
1
1
1
1
1
1

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Evaluation of National Cancer Institute (NCI) Smoking Intervention Resources

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
No CIS/No Loz/No Email/Lite Website/Brief Booklet
n=35 Participants
CIS/No Loz/No Email/Lite Website/Brief Booklet
n=32 Participants
no CIS/Loz/No Email/Lite Website/Brief Booklet
n=36 Participants
No CIS/no Loz/Email/Lite Website/Brief Booklet
n=33 Participants
No CIS/No Loz/No Email/Full Website/Brief Booklet
n=36 Participants
No CIS/No Loz/No Email/Lite Website/Full Booklet
n=36 Participants
CIS/Loz/No Email/Lite Website/Brief Booklet
n=22 Participants
CIS/No Loz/Emails/Lite Website/Brief Booklet
n=27 Participants
CIS/No Loz/no Email/Full Website/Brief Booklet
n=28 Participants
CIS/No Loz/no Email/Lite Website/Full Booklet
n=28 Participants
No CIS/Loz/Emails/Lite Website/Brief Booklet
n=38 Participants
No CIS/Loz/No Emails/Lite Website/Full Booklet
n=38 Participants
No CIS/Loz/No Emails/Full Website/Lite Booklet
n=39 Participants
no CIS/no Loz/Emails/Full Website/Brief Booklet
n=38 Participants
no CIS/no Loz/Emails/Lite Web/Full Booklet
n=38 Participants
no CIS/no Loz/no Email/Full Website/Full Booklet
n=32 Participants
CIS/Loz/Emails/Lite Website/Brief Booklet
n=29 Participants
CIS/Loz/no Email/Full Website/Brief Booklet
n=27 Participants
CIS/Loz/no Email/Lite Website/Full Booklet
n=21 Participants
CIS/no Loz/Emails/Full Website/Brief Booklet
n=27 Participants
CIS/no Loz/Emails/Lite Website/Full Booklet
n=29 Participants
CIS/no Loz/no Email/Full Website/Full Booklet
n=30 Participants
No CIS/Loz/Emails/Full Website/Brief Booklet
n=36 Participants
No CIS/Loz/Emails/Lite Website/Full Booklet
n=36 Participants
No CIS/Loz/no Emails/Full Website/Full Booklet
n=37 Participants
no CIS/no Loz/Emails/Full Website/Full Booklet
n=38 Participants
CIS/Loz/Emails/Full Website/Brief Booklet
n=34 Participants
CIS/Loz/Emails/Lite Website/Full Booklet
n=31 Participants
No CIS/Loz/Emails/Full Website/Full Booklet
n=35 Participants
CIS/no Loz/Emails/Full Website/Full Booklet
n=29 Participants
CIS/Loz/no Emails/Full Website/Full Booklet
n=31 Participants
CIS/Loz/Emails/Full Website/Full Booklet
n=28 Participants
Total
n=1034 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=10 Participants
0 Participants
n=115 Participants
0 Participants
n=24 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
0 Participants
n=36 Participants
0 Participants
n=36 Participants
0 Participants
n=24 Participants
0 Participants
n=135 Participants
0 Participants
n=136 Participants
1 Participants
n=44 Participants
0 Participants
n=667 Participants
0 Participants
n=7 Participants
0 Participants
n=6 Participants
1 Participants
n=10 Participants
0 Participants
n=14 Participants
0 Participants
n=4 Participants
1 Participants
n=4 Participants
0 Participants
n=4 Participants
0 Participants
n=26 Participants
0 Participants
n=12 Participants
0 Participants
n=206 Participants
1 Participants
n=12 Participants
1 Participants
n=12 Participants
0 Participants
n=12 Participants
5 Participants
n=384 Participants
Age, Categorical
Between 18 and 65 years
34 Participants
n=5 Participants
32 Participants
n=7 Participants
35 Participants
n=5 Participants
32 Participants
n=4 Participants
36 Participants
n=21 Participants
36 Participants
n=10 Participants
22 Participants
n=115 Participants
26 Participants
n=24 Participants
27 Participants
n=42 Participants
28 Participants
n=42 Participants
38 Participants
n=42 Participants
38 Participants
n=42 Participants
37 Participants
n=36 Participants
37 Participants
n=36 Participants
37 Participants
n=24 Participants
32 Participants
n=135 Participants
28 Participants
n=136 Participants
25 Participants
n=44 Participants
21 Participants
n=667 Participants
27 Participants
n=7 Participants
29 Participants
n=6 Participants
27 Participants
n=10 Participants
36 Participants
n=14 Participants
35 Participants
n=4 Participants
35 Participants
n=4 Participants
37 Participants
n=4 Participants
33 Participants
n=26 Participants
29 Participants
n=12 Participants
35 Participants
n=206 Participants
28 Participants
n=12 Participants
29 Participants
n=12 Participants
27 Participants
n=12 Participants
1008 Participants
n=384 Participants
Age, Categorical
>=65 years
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=10 Participants
0 Participants
n=115 Participants
1 Participants
n=24 Participants
1 Participants
n=42 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
0 Participants
n=42 Participants
2 Participants
n=36 Participants
1 Participants
n=36 Participants
1 Participants
n=24 Participants
0 Participants
n=135 Participants
1 Participants
n=136 Participants
1 Participants
n=44 Participants
0 Participants
n=667 Participants
0 Participants
n=7 Participants
0 Participants
n=6 Participants
2 Participants
n=10 Participants
0 Participants
n=14 Participants
1 Participants
n=4 Participants
1 Participants
n=4 Participants
1 Participants
n=4 Participants
1 Participants
n=26 Participants
2 Participants
n=12 Participants
0 Participants
n=206 Participants
0 Participants
n=12 Participants
1 Participants
n=12 Participants
1 Participants
n=12 Participants
21 Participants
n=384 Participants
Age, Continuous
38.8 years
STANDARD_DEVIATION 13.117 • n=5 Participants
41.97 years
STANDARD_DEVIATION 12.124 • n=7 Participants
39.47 years
STANDARD_DEVIATION 11.661 • n=5 Participants
40.58 years
STANDARD_DEVIATION 13.709 • n=4 Participants
39.89 years
STANDARD_DEVIATION 12.132 • n=21 Participants
39.92 years
STANDARD_DEVIATION 13 • n=10 Participants
40.5 years
STANDARD_DEVIATION 11.859 • n=115 Participants
38.52 years
STANDARD_DEVIATION 14.091 • n=24 Participants
37.71 years
STANDARD_DEVIATION 13.160 • n=42 Participants
38.11 years
STANDARD_DEVIATION 13.076 • n=42 Participants
39 years
STANDARD_DEVIATION 12.192 • n=42 Participants
39.16 years
STANDARD_DEVIATION 10.812 • n=42 Participants
36.03 years
STANDARD_DEVIATION 11.957 • n=36 Participants
39.47 years
STANDARD_DEVIATION 12.967 • n=36 Participants
38.18 years
STANDARD_DEVIATION 11.925 • n=24 Participants
40.56 years
STANDARD_DEVIATION 11.007 • n=135 Participants
42.31 years
STANDARD_DEVIATION 13.134 • n=136 Participants
43.04 years
STANDARD_DEVIATION 12.738 • n=44 Participants
35.76 years
STANDARD_DEVIATION 12.373 • n=667 Participants
39.26 years
STANDARD_DEVIATION 10.376 • n=7 Participants
37.79 years
STANDARD_DEVIATION 10.115 • n=6 Participants
40.37 years
STANDARD_DEVIATION 13.433 • n=10 Participants
38.81 years
STANDARD_DEVIATION 11.112 • n=14 Participants
42.97 years
STANDARD_DEVIATION 13.716 • n=4 Participants
38.92 years
STANDARD_DEVIATION 13.215 • n=4 Participants
40.32 years
STANDARD_DEVIATION 11.242 • n=4 Participants
38.47 years
STANDARD_DEVIATION 12.310 • n=26 Participants
37.77 years
STANDARD_DEVIATION 13.386 • n=12 Participants
36.91 years
STANDARD_DEVIATION 10.441 • n=206 Participants
35.62 years
STANDARD_DEVIATION 12.754 • n=12 Participants
38.23 years
STANDARD_DEVIATION 13.674 • n=12 Participants
42.54 years
STANDARD_DEVIATION 12.96 • n=12 Participants
39.28 years
STANDARD_DEVIATION 12.343 • n=384 Participants
Sex: Female, Male
Female
20 Participants
n=5 Participants
18 Participants
n=7 Participants
27 Participants
n=5 Participants
23 Participants
n=4 Participants
21 Participants
n=21 Participants
23 Participants
n=10 Participants
19 Participants
n=115 Participants
19 Participants
n=24 Participants
19 Participants
n=42 Participants
23 Participants
n=42 Participants
24 Participants
n=42 Participants
25 Participants
n=42 Participants
25 Participants
n=36 Participants
21 Participants
n=36 Participants
26 Participants
n=24 Participants
23 Participants
n=135 Participants
23 Participants
n=136 Participants
21 Participants
n=44 Participants
13 Participants
n=667 Participants
19 Participants
n=7 Participants
17 Participants
n=6 Participants
19 Participants
n=10 Participants
23 Participants
n=14 Participants
28 Participants
n=4 Participants
28 Participants
n=4 Participants
25 Participants
n=4 Participants
18 Participants
n=26 Participants
24 Participants
n=12 Participants
22 Participants
n=206 Participants
20 Participants
n=12 Participants
25 Participants
n=12 Participants
22 Participants
n=12 Participants
703 Participants
n=384 Participants
Sex: Female, Male
Male
15 Participants
n=5 Participants
14 Participants
n=7 Participants
9 Participants
n=5 Participants
10 Participants
n=4 Participants
15 Participants
n=21 Participants
13 Participants
n=10 Participants
3 Participants
n=115 Participants
8 Participants
n=24 Participants
9 Participants
n=42 Participants
5 Participants
n=42 Participants
14 Participants
n=42 Participants
13 Participants
n=42 Participants
14 Participants
n=36 Participants
17 Participants
n=36 Participants
12 Participants
n=24 Participants
9 Participants
n=135 Participants
6 Participants
n=136 Participants
6 Participants
n=44 Participants
8 Participants
n=667 Participants
8 Participants
n=7 Participants
12 Participants
n=6 Participants
11 Participants
n=10 Participants
13 Participants
n=14 Participants
8 Participants
n=4 Participants
9 Participants
n=4 Participants
13 Participants
n=4 Participants
16 Participants
n=26 Participants
7 Participants
n=12 Participants
13 Participants
n=206 Participants
9 Participants
n=12 Participants
6 Participants
n=12 Participants
6 Participants
n=12 Participants
331 Participants
n=384 Participants
Region of Enrollment
United States
35 participants
n=5 Participants
32 participants
n=7 Participants
36 participants
n=5 Participants
33 participants
n=4 Participants
36 participants
n=21 Participants
36 participants
n=10 Participants
22 participants
n=115 Participants
27 participants
n=24 Participants
28 participants
n=42 Participants
28 participants
n=42 Participants
38 participants
n=42 Participants
38 participants
n=42 Participants
39 participants
n=36 Participants
38 participants
n=36 Participants
38 participants
n=24 Participants
32 participants
n=135 Participants
29 participants
n=136 Participants
27 participants
n=44 Participants
21 participants
n=667 Participants
27 participants
n=7 Participants
29 participants
n=6 Participants
30 participants
n=10 Participants
36 participants
n=14 Participants
36 participants
n=4 Participants
37 participants
n=4 Participants
38 participants
n=4 Participants
34 participants
n=26 Participants
31 participants
n=12 Participants
35 participants
n=206 Participants
29 participants
n=12 Participants
31 participants
n=12 Participants
28 participants
n=12 Participants
1034 participants
n=384 Participants

PRIMARY outcome

Timeframe: Measured after the 3 month follow up assessment

Population: "Intention to treat (ITT)

Abstinence will be defined as 7-day point prevalence.

Outcome measures

Outcome measures
Measure
Cancer Information Service Counseling ("CIS")
n=453 Participants
Participants in this intervention group received telephone quitline counseling from the Cancer Information Service (CIS). These proactive calls initiated by CIS included an initial call (30 min), occurring within 3 days of enrollment, plus 4 additional counseling calls (up to 15 min each) scheduled to occur on the quit day or the day after, and then weekly for the next 3 weeks. The content of the counseling calls focused initially on motivating quitting and then setting a quit date, providing support, building self-efficacy, and skill training. The CIS intervention group will be compared to a "No CIS" group. The original randomization plan called for approximately half of the total sample of 1034 participants to be randomized to this intervention group (CIS) and the other half to the No CIS intervention group. However, due to a problem in the electronic transfer of data from the research coordinating site to CIS, 453 participants were randomized to CIS and 581 to the "No CIS" group.
No Cancer Information Service Counseling ("No CIS")
n=581 Participants
Participants in this intervention group did not receive telephone quitline counseling from the Cancer Information Service (CIS). This intervention group will be compared to an intervention group that did receive telephone quitline counseling from the CIS. The original randomization plan called for approximately half of the total sample of 1034 participants to be randomized to this intervention group (No CIS) and the other half to the CIS intervention group. However, due to a problem in the electronic transfer of data from the research coordinating site to CIS, 581 participants were randomized to "No CIS" group and 453 to the CIS group.
Nicotine Replacement Therapy (NRT; Mini-Lozenge for 2 Weeks)
n=518 Participants
Participants in this intervention group received a 2-week starter package of nicotine mini-lozenges, with dose based on time to since first cigarette of the day as per package instructions. Each package contained 2 mini-lozenge dispensers (162 lozenges total) and instructions on proper use. Approximately half of the total sample of 1034 participants was randomized to receive the 2-week supply of mini-lozenges; the other half received no mini-lozenges.
No Nicotine Replacement Therapy
n=516 Participants
Participants in this intervention group received no nicotine replacement therapy (NRT), i.e., no nicotine mini-lozenges. Approximately half of the total sample of 1034 participants was randomized to receive no NRT; the other half a 2-week supply of nicotine mini-lozenges.
Email Messaging
n=526 Participants
Participants Email Messaging intervention group received brief email messages that could be accessed by any computer or mobile device that allowed email receipt. Messages were intended to provide: (1) Motivation/encouragement; (2) Quitting tips and information; (3) Adherence/education prompts (to use available resources as recommended), and (4) relapse prevention content. These emailed messages were sent twice/day for two weeks, once/day for an additional month, and then one every 3rd day for an additional 6 weeks (constituting a 3-month-long intervention). Approximately half of the total sample of 1034 participants was randomized to receive Email Messaging; the other half received no Email Messaging.
No Email Messaging
n=508 Participants
Participants in this intervention group received no Email Messaging. Approximately half of the total sample of 1034 participants was randomized to receive no Email Messaging; the other half received 3 months of Email Messaging.
Full SmokeFree.Gov Website
n=525 Participants
Participants in the Full SmokeFree.gov website intervention group received the standard smokefree.gov website content that included resources to motivate quitting and a step-by-step quitting guide that provided a skill-based intervention for preparing to quit, quitting, and maintaining abstinence. In addition, the active website offered encouragement and support, motivational information, and interactive features and referral links. The active website did not include direct interaction with users (e.g. live help) or interactive audio or video content. User-engagement features included task charts for behavior change, self-monitoring tools (e.g. for cravings and self-assessment), creation of a personal calendar, links to a quitline or to a counselor via text message for live help and social support through social media. No tailoring, feedback or outbound reminders were in use. Approximately half of the total sample of 1034 participants was randomized to receive the Full Smoke
Lite SmokeFree.Gov Website
n=509 Participants
Participants in the Lite SmokeFree.gov Website intervention group received received the "Lite" version of the website (developed by the investigators for this research) that included information about smoking and health such as benefits of quitting and information about withdrawal, medications and stress, but contained no interactive features or content that would support skill training. The look and graphics directly mirrored the full smokefree.gov website, but the number of web pages was reduced from over 50 to 16, and external links to resources were virtually eliminated. Approximately half of the total sample of 1034 participants was randomized to receive theLite SmokeFree.gov Website; the other half received the Full SmokeFree.gov Website.
Full Cessation Booklet
n=517 Participants
Participants in the Full Cessation Booklet intervention group received the National Cancer Institute's 36-page "Clearing the Air" brochure (www.smokefree.gov/pubs/clearing\_the\_air.pdf), containing a detailed guide for preparing to quit, quitting, and preventing relapse as well as suggested resources. Approximately half of the total sample of 1034 participants was randomized to receive the Full Cessation Booklet; the other half received a Brief Cessation Booklet.
Brief Cessation Booklet
n=517 Participants
Participants in the Full Cessation Booklet intervention group received a 12-page booklet developed by the investigators. The content of this booklet was the same as contained in the 36-page "Clearing the Air" booklet except that information directly relevant to coping skill training (identification of smoking triggers, making coping plans) was removed. Approximately half of the total sample of 1034 participants was randomized to receive the Brief Cessation Booklet; the other half received the Full Cessation Booklet.
7-Day Point-Prevalence Abstinence From Smoking
27.8 percentage of participants not smoking
26.3 percentage of participants not smoking
30.5 percentage of participants not smoking
23.4 percentage of participants not smoking
26.2 percentage of participants not smoking
27.8 percentage of participants not smoking
29.5 percentage of participants not smoking
24.4 percentage of participants not smoking
26.3 percentage of participants not smoking
27.7 percentage of participants not smoking

SECONDARY outcome

Timeframe: Measured at the1 week, 2 week, 3 week, 1 month, 3 month and 7 month follow up assessments.

Inclusive of smoking rate amongst those smoking, smoking cessation milestones: initial cessation, lapse latency, lapse-relapse latency; and setting a quit date.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Assessed at the 7 month follow up assessment. Furthermore, Website use will be collected as pages viewed, time viewed, use occasions, and composite measures. Counseling use will be measured by number of counseling calls.

We will measure participants' use the experimental resources compared to the non-experimental resources. Particularly with the study websites, we will be tracking how often and how long participants use the regular smokefree.gov website versus the placebo website as well as what parts of the websites they are using for 6 months.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Data collected at all assessments (Measured at the1 week, 2 week, 3 week, 1 month, 3 month and 7 month follow ups), during web use measurements (6 months), and counseling calls measurements (4 weeks). Analyzed after the study.

We will measure how these experimental resources (as well as combinations of resources) aid in quit attempts and abstinence outcomes.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Measured at the1 week, 2 week, 3 week, 1 month, 3 month and 7 month follow up assessments.

We will measure the manifestation and severity of withdrawal symptoms of participants in each treatment group.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Measured at the1 month, 3 month and 7 month follow up assessments.

We will measure perceived support from both treatment and non-treatment resources.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Measured at the 1 month, 3 month and 7 month follow up assessments

We will measure how satisfied participants were with the resources they were given as well as what might have made their quit attempts easier or more successful.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: Measured at the 1 month, 3 month and 7 month follow up assessments.

Quit attempts will be defined in two ways: self-report of a serious attempt to quit, and occurrence of at least a 24 hr period of abstinence that was for the purpose of cessation.

Outcome measures

Outcome data not reported

Adverse Events

Lozenge

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

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Stevens Smith, PhD

University of Wisconsin

Phone: 608-262-7563

Results disclosure agreements

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