Table 5

Criterion and Construct validity of Intermittent and Constant Osteoarthritis and Pain (ICOAP) subscales and total pain (n=110)

SF12 Physical Component SummarySF12 Mental Component SummaryWOMAC Pain Subscale
ICOAP
 Constant−0.487 (P<0.001)*−0.398 (P<0.001)*0.671 (P<0.001)†
 Intermittent−0.590 (P<0.001)†−0.418 (P<0.001)*0.678 (P<0.001)†
 Total−0.558 (P<0.001)†−0.431 (P<0.001)*0.707 (P<0.001)†

  • Spearman’s correlation coefficients, p<0.001.

  • *Moderate correlation (r=0.35–0.50).

  • †Strong correlation (r≥>0.5).