P G Shekelle1, R H Brook. 1. Department of Medicine, University of California Los Angeles 90024.
Abstract
BACKGROUND: Little population-based information is available on the use of chiropractic services. METHODS: We analyzed data from the RAND Health Insurance Experiment (HIE), a community-based study of the use of health services. Insurance claim forms for all fee-for-service patients who completed the study were examined for all visits coded as being seen by a chiropractor. Services provided and patient-specified symptoms were taken from these forms. Population-based use rates were calculated for each HIE site. Use rates and services were calculated separately for first visits and repeat visits. RESULTS: There were 5,279 persons who contributed 19,021 person-years of exposure during the study; 395 different persons used 7,873 chiropractic services for a visit rate of 41 per 100 person-years and rate of use of 7.5 percent. Forty-two percent of all visits were for pain in the back. Spinal manipulation accounted for 61 percent of all services provided. Compared to non-users, users tended to be White, middle-aged, married, and high school educated. Seven-fold geographic variations in the use of chiropractic services were seen. CONCLUSIONS: Chiropractors deliver a substantial amount of health care to the US population, and there are significant geographic variations in the rate and intensity of use of chiropractic services.
BACKGROUND: Little population-based information is available on the use of chiropractic services. METHODS: We analyzed data from the RAND Health Insurance Experiment (HIE), a community-based study of the use of health services. Insurance claim forms for all fee-for-service patients who completed the study were examined for all visits coded as being seen by a chiropractor. Services provided and patient-specified symptoms were taken from these forms. Population-based use rates were calculated for each HIE site. Use rates and services were calculated separately for first visits and repeat visits. RESULTS: There were 5,279 persons who contributed 19,021 person-years of exposure during the study; 395 different persons used 7,873 chiropractic services for a visit rate of 41 per 100 person-years and rate of use of 7.5 percent. Forty-two percent of all visits were for pain in the back. Spinal manipulation accounted for 61 percent of all services provided. Compared to non-users, users tended to be White, middle-aged, married, and high school educated. Seven-fold geographic variations in the use of chiropractic services were seen. CONCLUSIONS: Chiropractors deliver a substantial amount of health care to the US population, and there are significant geographic variations in the rate and intensity of use of chiropractic services.
Authors: J P Newhouse; W G Manning; C N Morris; L L Orr; N Duan; E B Keeler; A Leibowitz; K H Marquis; M S Marquis; C E Phelps; R H Brook Journal: N Engl J Med Date: 1981-12-17 Impact factor: 91.245
Authors: Ashutosh Tamhane; Gerald McGwin; David T Redden; Laura B Hughes; Elizabeth E Brown; Andrew O Westfall; Doyt L Conn; Beth L Jonas; Edwin A Smith; Richard D Brasington; Larry W Moreland; S Louis Bridges; Leigh F Callahan Journal: Arthritis Care Res (Hoboken) Date: 2014-02 Impact factor: 4.794