日本における腰痛の有症状割合と腰痛に関連する要因の検討―地域住民を対象とした調査

Low Back Pain in Japan : Prevalence and Associated Psychosocial Factors in the General Population

　目的：日本における腰痛の有症状割合を明らかにすること，および腰痛に関連する要因を検討することとした．

　対象・方法：日本に居住する20～80歳の住民を標的集団とし，層化二段階無作為抽出法により4,500人を抽出して自記式質問票調査を実施した．

　結果：腰痛の有症状割合は，男性29.2%，女性31.8%であった．腰痛は，併存疾患の数が多いこと，腰痛の家族歴があること，短い教育歴，ストレスが強いこと，抑うつ症状があることと関連がみられた．

　結語：日本の一般集団における腰痛の基礎的なエビデンスを示した．

　AIMS：The aims of this study were to determine the prevalence of low back pain (LBP) and to identify factors associated with LBP in the general population.

　METHODS：We used the data obtained in a nationwide survey of 4,500 people aged 20 years and over who were selected from the entire population of Japan by stratified random sampling.　A self-administered questionnaire consisted of questions regarding LBP, depressive symptoms, perceived stress, and demographic factors.

　RESULTS：A total of 2,996 subjects filled out the self-administered questionnaire.　The prevalence of LBP was 29.2% among the men and 31.8% among the women.　The presence of two or more chronic diseases, a family history of LBP, a low education level, depressive symptoms, and severe perceived stress were associated with LBP.

　CONCLUSION：This study determined the prevalence of LBP and identified risk factors associated with LBP in a representative sample of the Japanese population,and it has yielded the epidemiological information required to develop policies for the prevention of LBP.