Table 4

Association of specific musculoskeletal diseases with the score obtained in questionnaires measuring function (HAQ) and quality of life (SF-12)

ConditionHAQ4-150SF-124-151
PhysicalPsychological
Rheumatoid arthritis1.75 (1.42 to 2.08)4-152 29.1 (21.9 to 36.2)4-152 42.8 (36.4 to 49.2)
Low back pain1.27 (1.08 to 1.48)4-152 32.4 (28.0 to 36.8)4-152 43.0 (38.8 to 47.2)
Knee osteoarthritis1.29 (1.08 to 1.49)4-152 31.7 (27.3 to 36.1)4-152 43.9 (39.8 to 48.0)
Hand osteoarthritis1.24 (1.05 to 1.44)35.5 (31.1 to 39.8)43.3 (39.2 to 47.5)
Fibromyalgia1.30 (1.09 to 1.51)4-152 33.9 (29.3 to 38.5)39.0 (34.6 to 43.4)4-152
None of the above1.23 (1.02 to 1.44)35.3 (30.8 to 39.9)44.8 (40.5 to 49.2)
  • The results are expressed as estimated mean with 95% confidence intervals after adjustment for covariates in a multifactorial ANOVA model.

  • 4-150 Range 0–3 where 0 = total capacity to perform activities of daily living and 3 = complete inability to perform any of them. The model was adjusted for sex, age, social class, and presence of any non-rheumatic chronic disease.

  • 4-151 Range 0–100 from worst to best situation both in physical and psychosocial domains of quality of life. The model for the physical component was adjusted for sex, age, social class, educational level, and presence of any non-rheumatic chronic disease. The model for the mental component was adjusted for sex and the presence of any non-rheumatic chronic disease.

  • 4-152 p<0.01.