A comparative analysis of chiropractic and general practitioner patients in North America: Findings from the Joint Canada/United States Survey of Health, 2002-03

 Just published online in BMC Health Services Research: 

Hurwitz EL, Chiang LM. A comparative analysis of chiropractic and general practitioner patients in North America: Findings from the Joint Canada/United States Survey of Health, 2002-03. BMC Health Serv Res 2006;6:49.

BACKGROUND: Scientifically rigorous general population-based studies comparing chiropractic with primary-care medical patients within and between countries have not been published. The objective of this study is to compare care seekers of doctors of chiropractic (DCs) and general practitioners (GPs) in the United States and Canada on a comprehensive set of sociodemographic, quality of life, and health-related variables.
METHODS: Data are from the Joint Canada/U.S. Survey of Health (JCUSH), 2002-03, a random sample of adults in Canada (N=3505) and the U.S. (N=5183). Respondents were categorized according to their pattern of health-care use in the past year. Distributions, percentages, and estimates (adjusted odds ratios) weighted to reflect the complex survey design were produced.
RESULTS: Nearly 80% of respondents sought care from GPs; 12% sought DC care. Compared with GP only patients, DC patients in both countries tend to be under 65 and white, with arthritis and disabling back or neck pain. U.S. DC patients are more likely obese and to lack a regular doctor; Canadian DC patients are more likely college educated, to have higher incomes, and dissatisfied with MD care. Compared with seekers of both GP and DC care, DC only patients in both countries have fewer chronic conditions, take fewer drugs, and have no regular doctor. U.S. DC only patients are more likely uninsured and dissatisfied with health care; Canadian DC only patients are more likely under 45, male, less educated, smokers, and not obese, without disabling back or neck pain, on fewer drugs, and lacking a regular doctor.
CONCLUSIONS: Chiropractic and GP patients are dissimilar in both Canada and the U.S., with key differences between countries and between DC patients who do and do not seek care from GPs. Such variation has broad and potentially far-reaching health policy and research implications.
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