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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)