Trends in teen pregnancy in Canada with comparisons to U.S.A. and England/Wales
Bibliographic record
Abstract
This report provides an overview of trends in teen pregnancy in Canada since 1974. In Canada, teen pregnancy rates are calculated as the sum of recorded live births, induced abortions, and miscarriages per 1,000 of the population of females aged 15 to 19. Between 1974, the year Statistics Canada began collecting and disseminating data on teen pregnancy, and 2003, the most recent year for which data is available, the teen pregnancy rate declined from 53.9 to 32.1. The decline was more pronounced among younger teens (15-17) than older teens (18-19). There were considerable variations in rates of teen pregnancy among the Canadian provinces/territories with higher rates occurring in the prairie provinces and territories. Canada, the USA, and England and Wales all saw their combined birth/ abortion rates among women under age 20 decline since 1990 and Canada's rate remains less than half the rate of both the USA and England and Wales.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.006 | 0.011 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.002 | 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".