Associations of sexual risk-taking with having intercourse before 15 years in adolescent females in Cape Breton, Nova Scotia, Canada
Bibliographic record
Abstract
BACKGROUND: This study was carried out to determine whether having first vaginal intercourse before 15 years of age is independently associated with sexual risk behaviours in Canadian female adolescents aged from 15 to 19 years. METHODS: Self-completion surveys which included questions about sexual risk behaviours were carried out at three high schools in Cape Breton, Nova Scotia, Canada, in May 2006. The survey also contained questions asking about socioeconomic status, substance use and depression. Associations of early intercourse with risk behaviours were assessed using unadjusted and adjusted logistic regression. RESULTS: The survey response rate was 92.5%. Of the 797 females aged 15-19 years responding, 475 had had vaginal intercourse in the previous year; 132 of these (27.8%) had intercourse before the age of 15 years. In adjusted analysis, early vaginal intercourse was associated with not using a condom at last intercourse (odds ratio (OR) 2.22; 95% confidence interval (CI) 1.40-3.54), unplanned intercourse in the previous year due to substance use (OR 2.45; 95% CI 1.49-4.04), having a casual partner at last intercourse (OR 2.10; 95% CI 1.23-3.56) and having three or more partners for vaginal intercourse in the previous year (OR 5.11; 95% CI 2.86-9.14). CONCLUSIONS: A history of having first intercourse before 15 years is associated with subsequent sexual risk-taking behaviours in adolescent females. These associations have clinical importance because the occurrence of early intercourse can alert health care providers to the possible presence of these risk behaviours. They also underscore the need to develop and assess programs which can delay the onset of sexual debut.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".