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Table 6 Relative efficiency of the ATRS across all time points

From: The Achilles tendon total rupture score: a study of responsiveness, internal consistency and convergent validity on patients with acute Achilles tendon ruptures

Time Point ATRS: Z statistic derived from Wilcoxon sign rank test EQ-5D: Z statistic derived from Wilcoxon sign rank test DRI: Z statistic derived from Wilcoxon sign rank test Relative Efficiency ATRS versus EQ-5D Relative Efficiency ATRS versus DRI
Pre-Injury/6 Week -6.8 -6.5 -6.7 (-6.8/-6.5)2 = 1.1 (-6.8/-6.7)2 = 1.0
Pre Injury/3 Month -6.7 -6.3 -6.2 (-6.7/-6.3)2 = 1.1 (-6.7/-6.2)2 = 1.2
Pre Injury/6 Month -5.5 -4.3 -4.8 (-5.5/-4.3)2 = 2.1 (-5.5/-4.8)2 = 1.3
Pre Injury/9 Month -4.6 -2.3 -2.8 (-4.6/-2.3)2 = 4 (-4.6/-2.8)2 = 2.7