When back pain becomes disabling: a regional analysis

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Abstract
Back pain is a common condition and in most cases is not disabling. We have investigated disabling back pain that leads to health care utilization, time lost from work, and high costs. Disabling back pain remains of obscure origin because the focus in studying it has been too narrow. Our indicator of disability is the industrial insurance claim rate for back sprain by county (N = 39) in the State of Washington [USA]. After controlling for the size of the labor force and the proportion of workers in occupations that are particularly at risk of back sprain, we determined the effect of 3 socioeconomic factors on the claim rate: the unemployment rate, percentage receiving food stamps, and per capita income. For 2 of the 3 years studied, socioeconomic factors accounted for about one-third of the variance in the claim rate. Even though claimants of industrial insurance are employed, the unemployment rate was significantly related to the claim rate in the 3 years studied. Our interpretation is that disability is a symptom of distress. Where there is a rise in job insecurity and an attendant rise in economic insecurity, there is a greater likelihood that back pain will become disabling.