No-intervention Control vs School-based Smoking Prevention Curriculum: Whether or Not Smoking Daily at 2 Years After High School
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
Measures 6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note | Source |
|---|---|---|---|---|---|---|
| Risk in group 1 | 0.291 | 0.277 | 0.305 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.284 | 0.27 | 0.299 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | 0.0065 | -0.0136 | 0.0266 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | 1.02 | 0.954 | 1.1 | log | ClinicalTrials.gov | |
| Odds ratio, group 1 over group 2 | 1.03 | 0.936 | 1.14 | log | ClinicalTrials.gov | |
| Number needed to treat, for one more participant with the outcome on No-intervention Control than on School-based Smoking Prevention Curriculum | 154 | from the risk difference interval | the interval includes no difference | ClinicalTrials.gov |
Groups 2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code | Source |
|---|---|---|---|---|---|---|
| Group 1 | No-intervention Control | No-intervention control group | 1,132 | 3,894 | OG000 | ClinicalTrials.gov |
| Group 2 | School-based Smoking Prevention Curriculum | Social influences school-based smoking prevention curriculum group | 1,103 | 3,881 | OG001 | ClinicalTrials.gov |
Outcome 5
| Field | Value | Source |
|---|---|---|
| Type | PRIMARY | ClinicalTrials.gov |
| Title | Whether or Not Smoking Daily at 2 Years After High School | ClinicalTrials.gov |
| Description | Response (from the 2-years-after-high school questionnaire) Daily: 1 to 10 cigarettes a day, Daily: 11 to 20 cigarettes a day, Daily: more than a pack a day to the Item How often do you currently smoke cigarettes? | ClinicalTrials.gov |
| Time frame | 2 years after high school | ClinicalTrials.gov |
| Population | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | Hutchinson Smoking Prevention Project | ClinicalTrials.gov |
| NCT number | NCT00115869 | ClinicalTrials.gov |
| Phases | PHASE3 | ClinicalTrials.gov |
| Conditions | Smoking Among Youth | ClinicalTrials.gov |
| Interventions | Social-influences | ClinicalTrials.gov |
| Lead sponsor | Fred Hutchinson Cancer Center | ClinicalTrials.gov |
| Results first posted | 2012-11-29 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT00115869?tab=results | ClinicalTrials.gov |
Source 4
| Field | Value | Source |
|---|---|---|
| Release | trial-comparisons-2026-03-23-0.1.0 | ClinicalTrials.gov |
| Release manifest SHA-256 | f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57 | ClinicalTrials.gov |
| AACT copy | 2026-03-23 | ClinicalTrials.gov |
| Tables read | outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet | ClinicalTrials.gov |
Release trial-comparisons-2026-03-23-0.1.0
ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299 ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
ClinicalTrials.gov: none stated ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.