Enthusiasm or uncertainty : small area variations in the use of mammography services in Ontario, Canada.
Study objective-To examine the variation in mammography utilisation in relation to age group and indication across health planning regions in Ontario, Canada.
Design-This study includes all women aged 30 and over in Ontario who received a mammogram between July 1,1990 and December 31,1991.
Data from a sample of 10 000 women aged 50-69 were used to assign mammogram indication as « screening », « possible diagnostic », or « probable diagnostic » based on previous health care utilisation patterns.
Age specific rates and age adjusted rates in relation to age group (30-39,40-49,50-69, and 70+years) and region were derived.
Main results-Overall, 572 762 women received one or more mammograms.
Rates increased from 30 to 54 years and decreased thereafter.
Similar variations were seen in the 40-49 and 50-69 age groups.
The ranking in the area specific rates remained consistent for all ages except the 30-39 year range.
In relation to indication, the largest variation across regions occurred in the screening group.
Conclusions-Mammography utilisation varies across age groups.
The greatest variability is for screening, probably because of physician referral patterns, patient uptake, and perhaps access to mammography.
The extent of variation was similar when compared between groups where recommendations were consistent (ages 50-59) and where they were inconsistent (ages 40-49) suggesting that perhaps enthusiasm rather than uncertainty is related to regional variation for this procedure.
Mots-clés Pascal : Tumeur maligne, Glande mammaire, Mammographie, Variation géographique, Age, Participation, Comportement, Epidémiologie, Diagnostic, Dépistage, Evaluation, Femme, Homme, Prévention, Etude comparative, Canada, Amérique du Nord, Amérique, Glande mammaire pathologie, Radiodiagnostic
Mots-clés Pascal anglais : Malignant tumor, Mammary gland, Mammography, Geographical variation, Age, Participation, Behavior, Epidemiology, Diagnosis, Medical screening, Evaluation, Woman, Human, Prevention, Comparative study, Canada, North America, America, Mammary gland diseases, Radiodiagnosis
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0465847
Code Inist : 002B20E02. Création : 03/02/1998.