TABLE 2.
Comparison of subject characteristics at baseline.
| Characteristics | Test group (n = 356) | Control group (n = 117) | p-values |
|---|---|---|---|
| Age (years, ± s) | |||
| Mean (SD) | 37.14 ± 13.44 | 37.20 ± 11.98 | 0.529 |
| Min, Max | 16.00–65.00 | 15.00–64.00 | |
| Median (Q3-Q1) | 34 (25.00–49.00) | 34 (27.00–48.00) | |
| Sex (%) | |||
| Men | 169 (47.5) | 52 (44.4) | 0.569 |
| Women | 187 (52.5) | 65 (55.6) | |
| Nationality (%) | |||
| Han ethnic | 339 (95.2) | 109 (93.2) | 0.387 |
| Non-Han ethnic | 17 (4.8) | 8 (6.8) | |
| Marital status (%) | |||
| Married | 216 (60.7) | 77 (65.8) | 0.321 |
| Others | 140 (39.3) | 40 (34.2) | |
| Occupation (%) | |||
| Mental labor | 246 (69.1) | 79 (67.5) | 0.643 |
| Physical labor | 92 (25.8) | 34 (29.1) | |
| Others | 18 (5.1) | 4 (3.4) | |
| Height (cm, ± s) | 166.60 ± 8.18 | 166.52 ± 8.19 | 0.934 |
| Weight (kg, ± s) | 63.72 ± 10.27 | 64.96 ± 11.52 | 0.595 |
| BMI (kg/m 2 ± s) | 22.87 ± 2.65 | 23.32 ± 2.98 | 0.143 |
| Past medical History (%) | 45 (12.6) | 18 (15.4) | 0.449 |
| Medication for other diseases (%) | 15 (4.2) | 7 (6.0) | 0.430 |
| Allergy history (%) | 4 (1.1) | 3 (2.6) | 0.372 |
| Injured part (%) | 0.532 | ||
| Ankle | 102 (28.7) | 36 (30.8) | |
| Knee | 71 (19.9) | 32 (27.4) | |
| Low back | 58 (16.3) | 16 (13.7) | |
| Neck | 28 (7.9) | 6 (5.1) | |
| Chest | 27 (7.6) | 7 (6.0) | |
| Wrist | 23 (6.5) | 5 (4.3) | |
| Shoulder | 15 (4.2) | 5 (4.3) | |
| Elbow | 8 (2.2) | 3 (2.6) | |
| Calf | 7 (2.0) | 0 (0) | |
| Hand | 6 (1.7) | 1 (0.9) | |
| Foot | 5 (1.4) | 4 (3.4) | |
| Hip | 3 (0.8) | 0 (0) | |
| Sacrococcygeal | 1 (0.3) | 0 (0) | |
| Abdomen | 1 (0.3) | 0 (0) | |
| Buttock | 1 (0.3) | 2 (1.7) | |
Statistics: p-values were calculated for continuous outcomes with the Wilcoxon-Mann-Whitney test; The chi-square test and Fisher’s exact test were performed for categorical outcomes; Injury parts were calculated using a Monte Carlo Estimate of the exact test.