Assessing Differences in the Implementation of Smoke-Free Contracts-A Cross-Sectional Analysis from the School Randomized Controlled Trial X:IT

Child-Adult Contract for Prevention of Tobacco Use: "As-Treated" Analysis of a Cluster Randomized Controlled Trial (the TOPAS Study) at 3-Year Follow-Up

To estimate the effect of a 3-year commitment to remain tobacco free on tobacco uptake among high school students in Sweden. The commitment is developed in the form of a contract between a child and a significant adult, constituting the core component of Tobacco-free Duo (T-Duo), a Swedish school-based tobacco prevention program. Secondary analysis of data from a cluster randomized controlled trial. Participants were 586 students in high schools assigned to the intervention arm of T-Duo. At inception, participants attended grade 7 (i.e., age 12-13). Only students who were tobacco naïve at baseline for the respective outcome and participated in all follow-ups were included. The exposure was defined as signing a 3-year contract with a significant adult, categorized as "stable contract" (3 years contract with the same contract partner), "unstable" (signed a contract sometime during follow-up but this was not sustained over time and/or with the same partner), and "no contract" at all during the intervention period. The primary outcome was having never tried cigarette smoking at the end of grade 9. Exposure and outcomes were self-reported in yearly questionnaires. Of 586 students, 321 (55%) held a stable contract, 204 (35%) an unstable contract, and 61 (10%) did not sign a contract at all. At the end of grade 9 (age 15-16), the relative risk (RR) to remain cigarette free was 1.11 (95% CI 1.00-1.22) (Number Needed to Treat = 10) among students in any type of contract compared to students that did not write a contract at all. The RRs for remaining tobacco free (secondary outcomes) ranged from 1.07 (0.98-1.16) for regular snus use to 1.16 (1.00-1.35) for any type of tobacco use. A commitment to remain tobacco free through a child-adult contract seems to exert a preventive effect on the uptake of tobacco use among Swedish adolescents over 3 school years. The current findings apply to a selected sample of both schools and students. Registration: Current Controlled Trials ISRCTN52858080 Date: January 4, 2019, retrospectively registered.

Effects of a Patient-Centered Intervention to Reduce Alcohol Use Among Youth With Chronic Medical Conditions

PURPOSE

Alcohol poses unique risks for youth with chronic medical conditions (YCMC) yet many drink. Preventive interventions targeting YCMC are scarce.

METHODS

YCMC with type 1 diabetes, juvenile idiopathic arthritis, systemic lupus erythematosus, or inflammatory bowel disease were recruited and randomized to trial the effects of a self-administered condition-tailored psychoeducational intervention on frequency in days of past 3-month alcohol use, alcohol-related risk perceptions, and knowledge. Changes in outcomes over time were measured and compared by treatment arm using multivariate mixed effects models.

RESULTS

Among N = 418 participants (average age 16.0 years, 52.2% female, 84.7% white, 90.7% non-Hispanic), 24.2% reported past-year alcohol use at baseline. Alcohol-related knowledge increased overall and was greater for the intervention group (adjusted improvement in knowledge score +7.70, 95% confidence interval [CI] 2.92-12.48). By 6-month follow-up, the percentage of youth reporting any alcohol use is risky/dangerous increased among intervention arm participants from 41.5% to 45.4% at baseline and decreased from 38.9% to 37.4% among controls (adjusted intervention effect odds ratio 1.79, 95% confidence interval 1.02-3.13). Overall, frequency of drinking increased over time from 3.72 to 4.52 days on average, with no differences by treatment group. Among female drinkers, the predicted mean frequency of drinking days declined in the intervention group (4.11-3.33) and increased among controls (2.82-4.55) (adjusted intervention effect rate ratio .50, 95% confidence interval .25-.99).

CONCLUSIONS

Exposure to a chronic illness-tailored psychoeducational intervention targeting alcohol use increased knowledge and perceived risk and, among females, reduced alcohol use. Promising results merit future work to optimize the model for both males and females.

Evaluation of the Swedish school-based program "tobacco-free DUO" in a cluster randomized controlled trial (TOPAS study). Results at 2-year follow-up

Friends' and parents' tobacco use are strong predictors of tobacco uptake among adolescents, however the effectiveness of interventions based on public commitments and agreements to remain tobacco-free are not established. Here, we evaluated the effectiveness of the school-based Swedish program Tobacco-Free Duo (T-Duo) in preventing adolescents from initiating tobacco use (TOPAS study). T-Duo is a multi-component intervention witha formal agreement between a student and an adult partner to remain tobacco-free during the entire 3-year study period as core component. The standardized educational component of the same program was used as comparator (control). Primary outcome was the probability to "remain a non-user" of i) cigarettes and secondary outcomes ii) other types of tobacco at second (21-month) follow-up. Analysis was conducted according to Intention To Treat. In total 1776 adolescents (51% female) aged 12-13 in grade 7 from 34 participating high schools in Sweden were included at baseline in 2018, of which 1489 were retained after 21 months. The Risk Ratio (RR) of not having tried cigarettes 21-months after initiation of the intervention was 1.03(CI 0.98-1.08), Bayes Factor(BF) = 0.93, Absolute Risk Difference(ARD) = 3.1%. Similar associations were found for never smoked a whole cigarette and never use of other tobacco/nicotine products. There was a minimal reduction of tobacco use initiation among Swedish adolescents assigned to a multi-component intervention (T-Duo) compared to those assigned to standardized classroom education after 2 schoolyears. However, for most outcomes' findings were inconclusive and not reliably different from zero. Trial registration: ISRCTN5285808 (doi:https://doi.org/10.1186/ISRCTN52858080); Study protocol: DERR1-https://doi.org/10.2196/21100. Registration: Current Controlled Trials ISRCTN52858080 Date: January 4, 2019, retrospectively registered. Protocol: Galanti, M.R., Pulkki-Brännström, A.-M., Nilsson, M., 2020. Tobacco-free duo adult-child contract for prevention of tobacco use among adolescents and parents: protocol for a mixed-design evaluation. JMIR Res. Protoc. 9, e21100. doi:10.2196/21100.