ArticleJournal of epidemiology and community health1997
Enthusiasm or uncertainty: small area variations in the use of mammography services in Ontario, Canada.
Article in Journal of epidemiology and community health, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed.
- Factors influencing mammography participation in Canada: an integrative review of the literature.Current oncology (Toronto, Ont.) · 2009Article
- Determining use of preventive health care in Ontario: comparison of rates of 3 maneuvers in administrative and survey data.Canadian family physician Medecin de famille canadien · 2009Article
- Geographical variation in radiological services: a nationwide survey.BMC health services research · 2007Article
- Health Care Utilization by Canadian Women.BMC women's health · 2004Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
STUDY
objectiveTo examine the variation in mammography utilisation in relation to age group and indication across health planning regions in Ontario, Canada.
designThis 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
resultsOverall, 572,762 women received one or more mammograms. Rates increased from 30-54 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.
conclusionsMammography 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.
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