表 2. Comparison of main indicators between the two groups.
两组主要指标对比
| Index | Control group (n=42) | Observation group (n=45) | t/χ 2 | P |
Amount of time for CT imaging to be clear of subarachnoid hemorrhage/d, 
|
8.24±1.74 | 6.35±1.13 | 6.048 | <0.001 |
Length-of-stay/d, 
|
42.54±1.75 | 31.33±1.87 | 28.817 | <0.001 |
| Duration of postoperative intubation/d | 9.22±1.26 | 8.24±1.09 | 3.887 | <0.05 |
Mannitol dose/L, 
|
6.37±1.07 | 4.65±1.12 | 7.313 | <0.001 |
| Cerebral edema/case | 6.133 | 0.013 | ||
| Mild | 4 | 2 | ||
| Moderate | 5 | 1 | ||
| Severe | 2 | 2 | ||
| Complication/case | − | − | 5.023 | 0.025 |
| Cerebrospinal fluid leakage | 1 | 0 | ||
| Hydrocephalus | 4 | 1 | ||
| Secondary bleeding | 2 | 1 | ||
| Intracranial infection | 3 | 1 | ||
| Prognosis/case | ||||
| Good prognosis | 16 | 27 | 4.170 | 0.041 |
| Poor prognosis | 21 | 15 | 2.488 | 0.115 |
| Death | 5 | 3 | 0.714 | 0.398 |