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Table 4 Correlations between condition-specific and generic scores

From: Performance of EQ-5D, howRu and Oxford hip & knee scores in assessing the outcome of hip and knee replacements

  Pre-op (95 % confidence interval) Post-op (95 % confidence interval) Pre-op z-test compared to correlation with howRu Post-op z-test compared to correlation with howRu
Hip Replacement
OHS vs. howRu (MCO) 0.82 (0.73–0.86) 0.80 (0.75–0.84)   
OHS vs. EQ-5D Index 0.74 (0.74–0.74) 0.76 (0.76–0.76) z = 1.82, p = 0.069 z = 0.84, p = 0.4
OHS vs. EQ-VAS 0.38 (0.37–0.39) 0.60 (0.60–0.61) z = 6.45, p < 0.0001 z = 3.37, p = 0.0008
EQ-5D Index vs. EQ-VAS 0.36 (0.35–0.37) 0.64 (0.64–0.64)   
Knee Replacement
OKS vs. howRu (MCO) 0.84 (0.71–0.88) 0.79 (0.72–0.84)   
OKS vs. EQ-5D Index 0.70 (0.70–0.70) 0.77 (0.77–0.77) z = 2.10, p = 0.036 z = 0.34, p = 0.7
OKS vs. EQ-VAS 0.38 (0.37–0.38) 0.60 (0.59–0.60) z = 5.05, p < 0.0001 z = 2.39, p = 0.017
EQ-5D Index vs. EQ-VAS 0.35 (0.34–0.36) 0.62 (0.62–0.63)