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Table 2 Postoperative outcome measures and the difference relative to preoperative scores for the all patients according to sex

From: Sex does not clinically influence the functional outcome of total knee arthroplasty but females have a lower rate of satisfaction with pain relief

Functional measureSexDifference
(95% CI)
P-value*
Male
(n = 1584)
Female
(n = 1926)
WOMAC
PainOne year (SD)79.8 (22.5)77.8 (24.2)2.0 (0.4 to 3.5)0.01
Change (95% CI)41.1 (39.9 to 42.4)45.2 (43.9 to 46.4)4.0 (2.2 to 5.8)< 0.001
p-value**< 0.001< 0.001  
FunctionOne year (SD)75.8 (20.6)74.2 (21.5)1.6 (0.2 to 3.0)0.03
Change (95% CI)35.7 (34.6 to 36.7)39.7 (38.7 to 40.6)4.0 (2.5 to 5.5)< 0.001
p-value**< 0.001< 0.001  
StiffnessOne year (SD)73.3 (21.8)71.6 (23.4)1.8 (0.2 to 3.3)0.02
Change (95% CI)31.9 (30.9 to 33.2)37.4 (36.2 to 38.5)5.5 (3.7 to 7.2)< 0.001
p-value**< 0.001< 0.001  
TotalOne year (SD)76.8 (19.5)75.3 (20.3)1.5 (0.1 to 2.8)0.03
Change (95% CI)36.9 (35.9 to 38.0)41.2 (40.3 to 42.2)4.3 (2.9 to 5.8)< 0.001
p-value**< 0.001< 0.001  
SF-12
PCSOne year (SD)39.4 (11.1)37.5 (11.3)1.9 (1.2 to 2.7)< 0.001
Change (95% CI)10.8 (10.3 to 11.4)9.8 (9.3 to 10.3)1.1 (0.4 to 1.8)0.003
p-value**< 0.001< 0.001  
MCSOne year (SD)50.5 (12.7)48.2 (13.5)2.3 (1.4 to 3.1)< 0.001
Change (95% CI)1.8 (1.2 to 2.4)2.4 (1.8 to 3.0)0.6 (−0.2 to 1.5)0.14
p-value**< 0.001< 0.001  
  1. * t-test
  2. ** paired t-test