Table 1.

Frequencies of selected self-reported disease conditions and chart review confirmation in 130 patients with SSc.

DiseasePrevalence in Self-reports, n (%)Prevalence in Chart Review, n (%)Agreement of SCQ vs Chart Review, n (%)Sensitivity, %Specificity, %PPV, %
Hypertension39 (30)26 (20)17 (13)657944
Diabetes8 (6)7 (5)6 (5)869875
Cancer7 (5)17 (13)6 (5)359986
Depression13 (10)10 (8)4 (3)409331
Osteoarthritis or back pain41 (32)40 (31)19 (15)487646
  • SCQ: Self-administered Comorbidity Questionnaire; PPV: positive predictive value.