References
- Japanese Ministry of Health and Welfare, Minister's Secretariat, Department of Statistics and Information (editors). The 2001 National Life Survey (in Japanese). Tokyo: Health and Welfare Statistics Association; 2003.
- Japanese Ministry of Labor, Minister's Secretariat, Department of Policy Planning and Research (editors). The 1997 National Survey on State of Employees' Health (in Japanese). Tokyo: Institute of Labor Administration; 1998.
- Andersson HI, Ejlertsson G, Leden I, Rosenberg C. Chronic pain in a geographically defined general population: studies of differ-ences in age, gender, social class, and pain locali7ation. Clin J Pain 1993;9:174–82.
- Urwin M, Symmons D, Allison T, Brammah T, Busby H, Roxby M, et al. Estimating the burden of musculoskeletal disorders in the community: the comparative prevalence of symptoms at different anatomical sites, and the relation to social deprivation. Ann Rheum Dis 1998;57:649–55.
- BassoIs A, Bosch F, Campillo M, CaneHas M, Banos J. An epide-miological comparison of pain complaints in the general popula-tion of Catalonia (Spain). Pain 1999;83:9–16.
- Bergman S, Herrstrom P, Hogstrom K, Petersson IF, Svensson B, Jacobsson LTH. Chronic musculoskeletal pain, prevalence rates, and sociodemographic associations in a Swedish population study. J Ftheumatol 2001;28:1369–77.
- Ihlebaek C, Eriksen HR, Ursin H. Prevalence of subjective health complaints (SHC) in Norway. Scand J Public Health 2002;30:20–9.
- Picavet HSJ, Schouten JSAG. Musculoskeletal pain in the Netherlands: prevalence, consequences, and risk groups, the DMC3-study. Pain 2003;102:167–78.
- Odding E, Valkenburg HA, Algra D, Vandenouweland FA, Grobbee DE, Hofman A. Association of locomotor complaints and disability in the Rotterdam study. Ann Rheum Dis 1995;54:721–5.
- Nagaosa Y, Kikuchi S, Konno S. Epidemiology of low back pain, sciatica, and knee pain: a cross-sectional questionnaire study (in Japanese). Seikei Saigai Geka 1994;37:59–67.
- Elliot AM, Smith BH, Hannaford PC, Smith WC, Chambers WA. The course of chronic pain in the community: results of a 4-year follow-up study. Pain 2002;99: 299–307.