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Table 4 Construct validity. Spearman’s correlations between the FreKAQ-I and KOOS, PI-NRS, PCS and HADS. Confidence intervals by bootstrap, 1000 repetitions

From: Cross-cultural adaptation, reliability and validity of the Fremantle Knee Awareness Questionnaire in Italian subjects with painful knee osteoarthritis

Measures versus FreKAQ-I Spearman’s correlation
rho 95% Conf. Interval
KOOS pain 0.51* 0.35 0.66
KOOS symptoms 0.50* 0.34 0.65
KOOS ADLs 0.59* 0.44 0.73
KOOS QoL 0.38* 0.20 0.56
PI-NRS rest 0.35* 0.16 0.54
PI-NRS motion 0.37* 0.19 0.54
PCS 0.47* 0.32 0.63
HADS anxiety 0.36* 0.18 0.54
HADS depression 0.43* 0.28 0.58
  1. *p < .001
  2. FreKAQ-I Fremantle knee awareness questionnaire, Italian version, KOOS Knee injury and osteoarthritis outcome score, ADLs activities of daily living, QoL quality of life, PI-NRS pain intensity numerical rating scale, PCS pain catastrophising scale, HADS Hospital anxiety and depression score