Table 1 Comparison of demographic characteristics in two groups.
From: Predictors of health-related quality of life after total knee arthroplasty: a case–control study
Variable | Group | P value | |
|---|---|---|---|
Case (N = 501) | Control (N = 501) | ||
Age (year) | 66.74 ± 7.71 | 66.89 ± 6.95 | 0.89 |
Gender | |||
Female Male | 429 (85.6%) 72(14.4%) | 422 (84.2%) 79 (15.8) | 0.71 |
BMI (kg/m2) | 29.66 ± 4.58 | 30.1 ± 4.68 | 0.35 |
Educational status | |||
Illiterate < diploma Diploma > diploma | 52 (10.4%) 126 (25.2%) 135 (26.9%) 188 (37.5%) | 47 (9.3%) 132 (26.4%) 126 (25.2%) 196 (39.1%) | 0.26 |
Smoker | |||
Positive Negative | 188 (37.5%) 313 (62.5%) | 192 (38.3%) 309 (61.7%) | 0.42 |
Number of comorbidities | |||
0 1 2 > 2 | 252 (50.3%) 189 (37.7%) 39 (7.8%) 21 (4.2%) | 245 (48.9%) 192 (38.3%) 44 (8.8%) 20 (4%) | 0.11 |
