Table 1. Questionnaire Scores and Differences between Male and Female Patients.

Score	All participants	Male (n = 14)	Female (n = 38)	p-value
Mean age (yr)	67.19 ± 7.68	68.29 ± 8.31	66.79 ± 7.51	0.538
Range of motion (°)	123.46 ± 8.08	125 ± 4.8	122.89 ± 8.98	0.410
OHI score	39 ± 12.39	44 ± 15.78	37.16 ± 10.56	0.077
Lie score	54.54 ± 18.19	50.21 ± 17.83	56.13 ± 18.29	0.303
Extroversion score	51.73 ± 21.39	50.86 ± 21.34	52.05 ± 21.64	0.860
Neuroticism score	69.29 ± 25.41	73.21 ± 17.64	67.74 ± 27.79	0.504
SF-12 score
Preoperative	26.67 ± 5.28	27.64 ± 5.02	26.32 ± 5.39	0.427
Postoperative	35.71 ± 6.99*	39.79 ± 4.63*	34.21 ± 7.17	0.013*
Improvement	9.04 ± 3.64*	12.14 ± 2.88*	7.89 ± 3.22	0.000*
KOOS score
Preoperative	33.29 ± 6.11	33.71 ± 6.38	33.13 ± 6.09	0.765
Postoperative	68.25 ± 9.82*	73.71 ± 7.09*	66.24 ± 9.98	0.013*
Improvement	34.96 ± 9.99*	40.00 ± 10.02*	33.10 ± 9.45	0.026*

Values are presented as mean ± standard deviation.

OHI: Oxford Happiness Inventory, SF-12: 12-item short form health survey, KOOS: Knee Injury and Osteoarthritis Outcome Score.

^*Significant (2-tailed) at the 0.05 level.