| 维生素D缺乏组(n = 14) | 维生素D不足组(n = 52) | 维生素D正常组(n = 237) | 统计量 | P值 |
减速 | 7 (50.0%) | 21 (40.4%) | 68 (28.7%) | c2 = 11.9 | 0.014 |
正常 | 3 (21.4%) | 26 (50.0%) | 104 (43.9%) | ||
加速 | 4 (28.6%) | 5 (9.6%) | 65* (27.4%) |