Objective. To assess the prevalence of obesity and its association wit
h low back pain in patients attending health care centres. Methods: A
case-control study of 2460 Arab patients attending urban and rural hea
lth centres in Riyadh region was conducted during Jan-Feb 1993. Twelve
health centres participated in the study. All patients attending the
health centres with low back pain (cases) were compared with patients
free from back pain (non-cases). Results: The mean ages were 34 years
for males and 32 years for females. Only 17.6% cases can be considered
as non-obese compared with 42.6% non-obese among non-cases. The mean
body mass index (BMI) of cases was 30.6 +/- 6.1 kg/M2 compared with 26
.7 +/- 5.8 kg/M2 of non-cases (p<0.01). Body mass indices were higher
among females, those of low education, housewives, non-Saudis and the
divorced or widowed than other groups (p<0.01). Patients living in rur
al areas had higher BMI than those residing in urban areas (P<0.01). C
onclusion: Low back pain is associated with obesity. The prevalence of
obesity is higher in females, housewives, non-Saudia, the divorced, t
he widowed, and among those living in rural areas.