Table 4

 Independent predictors of significant impairment (multivariate logistic regression analysis)

OR (95% CI)p value
Significant impairment is defined as impairment on at least two domains in daily life.
Patient characteristics
Presenting symptom
    Abdominal painReference category0.10
    Headache2.71 (0.84 to 8.72)
    Musculoskeletal pain3.40 (1.30 to 8.87)0.01
Role/Social Functioning (CHQ, range 0–100)0.98 (0.97 to 1.0)0.06
General Health Perceptions (CHQ, range 0–100)0.98 (0.96 to 0.99)0.04
VAS pain previous days (mean, SD)1.19 (1.02 to 1.39)0.02