[Epidemiology of bone and joint disease - the present and future - . Epidemiology of lumbar spondylosis in Japan : the ROAD study].
To clarify the prevalence and estimate the number of people with osteoarthritis, and osteoporosis in Japan, we established a large-scale population-based cohort study entitled Research on Osteoarthritis/osteoporosis Against Disability (ROAD). The prevalence of lumbar spondylosis (LS) in men and women was 80.6% and 61.5%, respectively with utilizing the ROAD baseline data. The cumulative incidence of LS in men and women was 15.2%/y and 10.4%/y, respectively with using the follow-up data. The estimated number of prevalent cases and incident cases/y of LS in Japan was approximately 38 million and 9 million, respectively. Older age, male-sex, and greater BMI were associated with the occurrence of LS.
Department of Joint Disease Research, 22nd Century Medical and Research Center, The University of Tokyo, Japan.
Noriko
N
Yoshimura
D000375:Aging; D006801:Humans; D007564:Japan / Q000453:epidemiology; D010003:Osteoarthritis / Q000150:complications / Q000453:epidemiology*; D010024:Osteoporosis / Q000150:complications / Q000453:epidemiology*; D012307:Risk Factors; D012737:Sex Factors; D055009:Spondylosis / Q000175:diagnosis / Q000453:epidemiology*