Patterns of HIV diagnosis among HIV-positive women giving birth in Ontario: results from the Ontario Perinatal HIV Database, 1994--2002
Bibliographic record
Abstract
Objective. To examine patterns of HIV diagnosis and correlates of late HIV diagnosis among HIV-infected mothers giving birth in Ontario from 1994 to 2002. Results. 33% were diagnosed before conception and 27% after delivery; 96% of HIV transmissions occurred among the latter. Proportion diagnosed after delivery decreased over time. Year of delivery was independent correlate of diagnosis after delivery; age and country of origin for diagnosis before conception. Mothers diagnosed before conception were older, mostly Canadian and fertility rate was lower than general population's. Methods. Information on 256 HIV-infected mothers reported to the CPARG surveillance and supplemented using Motherisk and HIV Program and chart reviews was used. Logistic regression modeling and tests of association were used to analyze the data. Conclusion. HIV prenatal testing since 1994 has increased diagnosis during pregnancy but the rate remains suboptimal. No specific subgroups of women, notably women from HIV-endemic countries, are being selectively missed.
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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 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".