组别 | 例数 | <3 h | 3~8 h | 8~15 h | >15 h |
研究组 | 65 | 42 (64.62) | 15 (23.08) | 7 (10.77) | 1 (1.54) |
对照组 | 65 | 25 (38.46) | 10 (15.38) | 21 (32.31) | 9 (13.85) |
统计量 | / | 6.359 | 6.221 | 9.651 | 4.568 |
p值 | / | 0.0012 | 0.0001 | 0.005 | 0.0004 |