Trichomonas vaginalis (TV) Prevalence and Correlates in Alberta Sexually Transmitted Infection (STI) Clinic Attendees
Notice bibliographique
Résumé
Background. Global estimates of Trichomonas vaginalis (TV) prevalence are variable with few Canadian studies. Methods. Specimens collected from January to April, 2016 for gonorrhea (NG) and Chlamydia (CT) screening from urogenital sites among male and female attendees (>17 years old) at two Alberta STI Clinics were tested for TV. The Gen-Probe Aptima Trichomonas vaginalis Assay (Gen-Probe Inc, San Diego, California) was used to test endocervical, vaginal and urine specimens. For a female sub-population, test results from endocervical and urine specimens collected on the same individuals at the same visit were compared and the proportion of discordant results was calculated. Descriptive analysis of individuals was completed using IBM SPSS Statistics version 19.0 (IBM, Armonk, NY). Results. A total of 2273 individuals were tested. Just over one-half (53.6%; n = 1218) were males, of which 355 (29%) were men who have sex with men (MSM); all tested via urine samples. The male TV prevalence was 0.2% (n = 3); all male cases were asymptomatic, and heterosexual. The male prevalence for CT was 5.8% and NG was 1.8%. The overall TV prevalence for females, combining endocervical/vaginal and urine results, was 2.8% (n = 29), CT was 5.7% (n = 60), and NG was 1.8% (n = 19). Only 6/29 (21%) female specimens positive using the Gen-Probe Aptima TV test were positive by wet mount. The TV prevalence among symptomatic women rose to 5.3% (21/397). Correlates associated with TV infection among females were older age (30y versus 27y, p = 0.04), Aboriginal ethnicity (41.4% versus 11.0%, p < 0.001), being symptomatic (72.4% versus 38.1%; p < 0.001), and requiring a pelvic exam (65.5% versus 41.9%; p = 0.01). There was high concordance of results between urine and cervical swabs (99.2%); the three (0.8%) specimens that were negative by urine were positive by swabs. Conclusion. Our study showed a prevalence of TV of 2.5% in female attendees at two Canadian STI Clinics, which is at the lower end of the range reported in other studies (0.3-30%), but between that of chlamydia and gonorrhea. No cases were identified among MSM and prevalence was very low (0.2%) in heterosexual males, all of whom were asymptomatic. The use of wet mount as a screening test in females would have missed more than 75% of female TV cases. Disclosures. P. Naidu, Hologic Inc: Investigator, Research support and Unrestricted educational grant provided to AMMI-CACMID to pay for accommodation and travel to national meeting; M. Chernesky, Hologic Inc: Research Contractor and Speaker's Bureau, Research support; A. Singh, Hologic Inc: Speaker at sponsored symposium, Travel and accommodation to meeting paid by unrestricted educational grant to AMMI CACMID
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,002 | 0,002 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».