3.
两组间呼吸支持治疗和住院时间的比较
| 组别 | 例数 | 呼吸机治疗天数 [P50(P25, P75), d] |
氧疗天数 [P50(P25, P75), d] |
住院天数 (x±s, d) |
| 对照组 | 219 | 3(0, 6) | 3(0, 7) | 23±13 |
| BPD组 | 41 | 31(16, 38) | 40(35, 54) | 60±15 |
| t(Z)值 | (-9.216) | (-9.833) | -16.264 | |
| P值 | < 0.001 | < 0.001 | < 0.001 |
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