PROSTATE CANCER AMONG RURAL AND URBAN MEN IN SASKATCHEWAN, 1969–1998.
Notice bibliographique
Résumé
PROSTATE CANCER AMONG RURAL AND URBAN MEN IN SASKATCHEWAN, 1969–1998. JAMES GOMES, SMITH P, MCDUFFIE HH. Centre for Agricultural Medicine, University of. EMail: [email protected] Prostate cancer in men in Canada is the most commonly diagnosed cancer (excluding non-melanoma skin tumours) and is the second most common cause of cancer mortality. From 1984–97, in Saskatchewan, the incidence and mortality rates of prostate cancer have been higher compared to the Canadian average. The incidence of prostate cancer has been reported to be higher among farmers compared to non-farmers. To examine the hypotheses that farmers have a higher incidence of prostate cancer compared to non-farmers and that farmers develop prostate cancer at an older age and also die at an older age compared to their counterparts, this ecological study sought associations between prostate cancer incidence and mortality and residence type (rural versus town versus city). All cases of prostate cancer diagnosed between January 1, 1969 and December 31, 1998 were extracted from the Cancer Registry of the Saskatchewan Cancer Agency. The Cancer Registry is population-based and cancer is a reportable disease in Saskatchewan. Thus, the Cancer Registry achieves virtually 100% case ascertainment. Variables extracted were: date of diagnosis, date of death, cause of death, age at diagnosis, morphology and residence code at diagnosis. The analysis was based on three residence types: city, town and rural. Denominator data came from the annual Saskatchewan Covered Population publication produced by Saskatchewan Health. Age-specific incidence rates, mean ages at diagnosis and death and mean survival were calculated by residence types. There were 14,158 cases of prostate cancer registered in Saskatchewan between 1969 and 1998 after exclusion of cases of pediatric rhabdomyosarcoma. There were 14,133 cases with residence-type data, with 3904 (27,6%) cases in rural, 4009 (28.4%) cases in towns and 6220 (44.0%) cases in urban areas. A total of 4062 deaths were recorded during the study period with prostate cancer as the primary cause of death. Prostate cancer incidence in rural areas during the five five-year periods (1969–73, 1974–78, 1979–83, 1984–88 and 1989–93) were lower compared to the incidence in cities for all men over 55 years of age and higher for men in towns, however, in 1994–98 rural men over 75 had the highest incidence of prostate cancer. The mean ages at diagnosis and death for men in towns were higher for each of the five-year periods compared to men from cities. Men from towns are diagnosed with prostate cancer later in life and these men also died at an older age and have a higher incidence rate of prostate cancer.
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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 | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,002 | 0,004 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,000 | 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 ».