Table 1. Characteristics of the study sample.
| Total (n = 1002) |
Clinical diagnosis of flatfoot | P | ||
| Yes | No | |||
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| Age (years) | 62.3 (13.1) | 67.3 (12.6) | 61.0 (12.9) | <0.001 |
| Charlson’s comorbidity index | 2.2 (1.8) | 2.8 (1.7) | 2.0 (1.7) | <0.001 |
| BMI (kg/m2) | 29.2 (4.7) | 31.5 (5.2) | 28.5 (4.3) | <0.001 |
| Perimeter waist (cm) | 96.4 (12.7) | 101.9 (13.1) | 94.9 (12.1) | <0.001 |
| Perimeter hip (cm) | 102.4 (8.5) | 104.7 (9.2) | 101.7 (8.1) | <0.001 |
| Waist-to-hip ratio | 0.9 (0.1) | 1.0 (0.1) | 0.9 (0.1) | <0.001 |
| Forefoot width (cm) | 9.5 (0.7) | 9.6 (0.6) | 9.4 (0.7) | 0.02 |
| n (%) | n (%) | n (%) | ||
| BMI Categories | <0.001 | |||
| Normal weight (18.5 kg/m2 ≤ BMI < 25 kg/m2) |
187 (18.8) | 17 (9.2) | 167 (90.8) | |
| Overweight (25 kg/m2 ≤ BMI < 30 kg/m2) |
416 (41.8) | 69 (16.7) | 344 (83.3) | |
| Obese (BMI ≥ 30 kg/m2) | 393 (39.5) | 122 (31.4) | 266 (68.6) | |
| Gender | 0.16 | |||
| Male | 471 (47.0) | 89 (19.2) | 375 (80.8) | |
| Female | 531 (53.0) | 120 (22.8) | 406 (77.2) | |
| SF-36 | Mean (SD) | Mean (SD) | Mean (SD) | P |
| Physical summary index | 52.5 (9.1) | 51.6 (9.7) | 52.8 (8.9) | 0.12 |
| Mental summary index | 50.8 (8.8) | 51.0 (8.8) | 50.7 (8.7) | 0.70 |
| Barthel index | 97.2 (6.7) | 97.5 (4.4) | 97.2 (6.9) | 0.56 |
| Lawton index | 6.2 (1.7) | 6.4 (1.7) | 6.2 (1.7) | 0.29 |
BMI, body mass index; SD, standard deviation.