P3.440 HIV Rapid Testing in the Framework of a STI Prevention Project For Vulnerable Populations
Bibliographic record
Abstract
Background Despite ongoing prevention and educational efforts, the incidence of new HIV infections in 2011 in Italy is estimated at 3.9 per 100,000 and 21.0 per 100,000 among foreigners. Many new infections, more than half in AIDS stage (sex risk 78.8%), are caused by persons unaware of their HIV infection. Methods On February 2012, the NIHMP (National Institute for Health, Migration and Poverty, Rome) started a project aimed at promoting access of vulnerable people to HIV testing and at disseminating knowledge about STIs. A Rapid HIV-1 Antibody Test (MedMira, Halifax, Nova Scotia) is offered to patients of the infectious diseases unit together with STI counselling involving doctor, nurse, transcultural mediator and psychologist. The test is also proposed to people who had never performed it before. If the test is positive, a confirmatory venous test is required. Multilingual written consent and pre-counselling questionnaire about HIV/STI-related knowledge and stigma and sexual behaviours are provided. After 3–6 months, post-counselling questionnaire is administered. Results At November 2012, 121 people were enrolled: 72 males (59.5%), 1 transgender, 103 migrants (85.1%), 9 homeless people (7.4%), 4 Roma (3.3%). 118 people accepted to undergo the test. 61 migrants (59.8%) performed it for the first time. The test was offered for screening (54), past STI (22), including two cases of HIV positivity, new STI (21) and STI risk (13). Two AIDS cases were reported (1.6%). Two tests (1.69%) were false positive. 8 tests (6.7%) were not defined because of previous positive laboratory HIV test/negative WB, co-occurrence of hepatitis, syphilis and scabies or aspirin treatment. 85 questionnaires (70.2%) were filled in. Couple counselling was conducted in 4 cases. Conclusions Preliminary data show that rapid testing is accepted and effective as well as laboratory test. The experimental counselling approach for mobile populations involving transcultural mediators will be evaluated.
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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 | 0.008 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.031 | 0.004 |
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".