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Table 5 Details for the (a) Timed Up and Go Test (TUGT) (b) 30-s Chair Stand Test (CST), (c) Numeric Pain Rating Scale (NPRS)

From: Cost, safety, and rehabilitation of same-stage, bilateral total knee replacements compared to two-stage total knee replacements

TUGT Pre-operation (in seconds) D0 post-op
(in seconds)
D/C from PT
(in seconds)
Same-stage 13.78 (SD 8.09) 48.45 (SD 17.48) 10.57 (SD 2.78)
Two-stage 1st knee 14.40 (SD 5.77) 44.14 (SD 21.23) 14.91 (SD 5.19)
Two-stage 2nd knee 13.28 (SD 6.10) 37.02 (SD 24.45) 11.73 (SD 3.02)
ANOVAa P value 0.112 0.005 0.003
Post-hoc Bonferroni testb
 Same-stage vs 1st knee 0.437 <  0.001
 Same-stage vs 2nd knee 0.003 0.003
 1st knee vs 2nd knee   0.141 <  0.001
CST Pre-operation
(no. of cycles)
D0 post-op
(no. of cycles)
D/C from PT
(no. of cycles)
Same-stage 11.64 (SD 4.72) 0.48 (SD 1.52) 11.86 (SD 3.27)
Two-stage 1st knee 10.03 (SD 3.20) 3.69 (SD 3.71) 10.88 (SD 3.06)
Two-stage 2nd knee 11.28 (SD 2.79) 4.69 (SD 4.00) 12.08 (SD 2.96)
ANOVAa P value 0.006 < 0.001 0.067
Post-hoc Bonferroni testb
 Same-stage vs 1st knee 0.001 < 0.001
 Same-stage vs 2nd knee 0.344 0.001
 1st knee vs 2nd knee 0.297 0.289
NPRS Pre-operation
(score 0–10)
D0 post-op
(score 0–10)
D/C from PT
(score 0–10)
Same-stage 7.69 (SD 1.48) 4.74 (SD 1.60) 0.19 (SD 0.83)
Two-stage 1st knee 6.08 (SD 1.85) 4.46 (SD 2.07) 1.44 (SD 1.51)
Two-stage 2nd knee 6.34 (SD 2.15) 5.00 (SD 1.88) 0.48 (SD 0.97)
ANOVAa P value < 0.001 0.261 <  0.001
Post-hoc Bonferroni testb
 Same-stage vs 1st knee < 0.001 0.001
 Same-stage vs 2nd knee 0.001 0.003
 1st knee vs 2nd knee 0.820 <  0.001
  1. Abbreviations: ANOVA analysis of variance, D0 post-op the first post-operative rehabilitation results in the second knee in two-stage group, D/C from PT the moment when the patient was discharged from physiotherapy (PT) at the end of all rehabilitation
  2. aOne-way ANOVA
  3. bPost-hoc Bonferroni P value correction: significant if P < 0.0170