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Table 5 Correlations of differences between post-op and pre-op scores

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

 

Difference (95 % confidence interval)

z-test compared to correlation with howRu

Hip Replacement

 OHS vs. howRu (MCO)

0.77 (0.66–0.85)

 

 OHS vs. EQ-5D Index

0.64 (0.63–0.64)

z = 2.36, p = 0.018

 OHS vs. EQ-VAS

0.33 (0.32–0.34)

z = 5.77, p < 0.0001

 EQ-5D Index vs. EQ-VAS

0.31 (0.30–0.32)

 

Knee Replacement

 OKS vs. howRu (MCO)

0.86 (0.75–0.92)

 

 OKS vs. EQ-5D Index

0.59 (0.58–0.60)

z = 3.86, p = 0.0001

 OKS vs. EQ-VAS

0.32 (0.31–0.33)

z = 6.02, p < 0.0001

 EQ-5D Index vs. EQ-VAS

0.28 (0.27–0.29)