Table 3 Demographic characteristics of idiopathic scoliosis cases and controls
Variable | Cases (n=175) | Controls (n=2372) | P |
|---|---|---|---|
Height (mean±SD, cm) Weight (mean±SD, kg) | 142.64±12.89 32.74±8.28 | 141.64±12.78 34.35±10.32 | 0.323 0.045 |
BMI (mean±SD, kg/cm2) | 16.03±3.22 | 16.91±3.95 | 0.004 |
Gender | |||
 Female | 116 (66.3) | 978 (41.2) | <0.001 |
 Male | 59 (33.7) | 1394 (58.8) | |
Appetite | |||
 Bad | 3 (1.7) | 111 (4.7) | 0.034 |
 General | 117 (66.9) | 1379 (58.1) | |
 Good | 55 (31.4) | 882 (37.2) | |
Having myopia | |||
 No | 112 (64.0) | 1774 (74.8) | 0.002 |
 Yes | 63 (36.0) | 598 (25.2) | |
Have a habit of carrying a backpack on one shoulder | |||
 Sometimes | 54 (30.9) | 758 (32.0) | 0.215 |
 No | 110 (62.9) | 1375 (58.0) |  |
 Yes | 11 (6.3) | 238 (10.0) |  |
Cognition of scoliosis | |||
 Never known | 58 (33.1) | 1231 (51.9) | <0.001 |
 Have heard | 62 (35.4) | 687 (29.0) | |
 Known | 55 (31.4) | 453 (19.1) | |
Self-sensation of scoliosis with symptoms | |||
 No | 65 (37.1) | 1142 (48.2) | <0.001 |
 Not clear | 83 (47.4) | 1136 (47.9) | |
 Yes | 27 (15.4) | 93 (3.9) | |
Sleep time | |||
 More than 10 h | 2 (1.1) | 117 (4.9) | 0.049 |
 8 to 10 h | 156 (89.1) | 1995 (84.1) | |
 Less than 8 h | 17 (9.8) | 260 (11.0) | |
Daily exercise duration | |||
 More than 3 h | 1 (0.6) | 117 (4.9) | 0.036 |
 2 to 3 h | 10 (5.7) | 175 (7.4) | |
 1 to 2 h | 63 (36.2) | 869 (36.7) | |
 Less than 1 h | 100 (57.5) | 1209 (51.0) | |