Table 2 Point prevalence of low back pain and extracurricular sports activities among girls by grade
Variable | E4 | E5 | E6 | J1 | J2 | J3 |
|---|---|---|---|---|---|---|
ECSA (−) | ||||||
n (%) | 1126 (49.4) | 1322 (48.5) | 1422 (52.5) | 660 (23.2) | 746 (27.0) | 2437 (89.3) |
LBP (+) /LBP (−) | 35/1091 | 42/1280 | 49/1373 | 42/618 | 55/691 | 196/2241 |
LBP (+) /n (%) | 3.1 | 3.2 | 3.4 | 6.4 | 7.4 | 8.0 |
ECSA (+) | ||||||
n (%) | 1154 (50.6) | 1405 (51.5) | 1284 (47.5) | 2188 (76.8) | 2016 (73.0) | 292 (10.7) |
LBP (+) /LBP (−) | 29/1125 | 65/1340 | 82/1202 | 163/2005 | 180/1836 | 40/252 |
LBP (+) /n (%) | 2.5 | 4.6 | 6.4 | 7.5 | 8.9 | 13.7 |
Odds ratio | 0.80 | 1.48 | 1.91 | 1.20 | 1.23 | 1.81 |
(95% CI) | (0.49–1.32) | (1.00–2.20)† | (1.33–2.75)** | (0.84–1.70) | (0.90–1.69) | (1.26–2.61)** |
PAF (%) | −10.7 | 19.0** | 28.8** | 12.2 | 13.3 | 7.0 |