Table 1.
Measure | Girls | Boys | Difference between sexes | ||||||
Age | n | Mean | Range | SD | n | Mean | Range | SD | P-value |
Thoracic kyphosis | |||||||||
11 | 514 | 26.6 | 5–57 | 8.9 | 545 | 27.8 | 4–58 | 8.5 | 0.03 |
12 | 476 | 27.5 | 6–61 | 9.6 | 498 | 28.0 | 5–56 | 9.4 | 0.41 |
13 | 428 | 29.5 | 2–63 | 9.8 | 473 | 30.9 | 5–61 | 10.4 | 0.04 |
14 | 393 | 29.0 | 7–57 | 9.0 | 454 | 30.0 | 6–69 | 9.7 | 0.12 |
22 | 208 | 26.1 | 8–57 | 8.9 | 222 | 33.7 | 9–61 | 9.6 | 0.001 |
Lumbar lordosis | |||||||||
11 | 514 | 38.7 | 17–75 | 8.8 | 545 | 36.9 | 11–64 | 8.4 | <0.001 |
12 | 476 | 35.5 | 16–61 | 8.3 | 498 | 34.2 | 16–61 | 7.7 | 0.01 |
13 | 428 | 37.0 | 3–66 | 8.7 | 473 | 35.8 | 17–58 | 8.0 | 0.03 |
14 | 393 | 33.4 | 18–55 | 7.4 | 454 | 33.0 | 15–56 | 7.0 | 0.42 |
22 | 208 | 37.8 | 18–72 | 8.1 | 222 | 34.6 | 11–58 | 8.6 | 0.001 |