Table 1: Patient baseline characteristics.

Total (n = 257) BSC I (n = 153) BSC II (n = 104) p-value
Age [years]* 68.9 ± 6.2 69.2 ± 6.2 68.5 ± 6.2 0.411
Sex (female / male)§ 150 / 107 90 / 63 60 / 44 0.857
BMI [kg/m2]* 29.1 ± 3.4 28.8 ± 3.4 29.5 ± 3.4 0.154
ASA (1 / 2 / 3)§ 88 / 154 / 15 55 / 88 / 10 33 / 66 / 5 0.659
Preoperative KS* 25 ± 4 25 ± 5 26 ± 4 0.483
Preoperative FS* 21 ± 6 21 ± 6 21 ± 6 0.525

Presented as mean ± standard deviation*, number of observations§. Abbreviations: BMI = body mass index; ASA = American Society of Anesthesiologists Classification; KS = Knee Score; FS = Function Score.