| 
 | 个案数 | 平均值 | 标准差 | 标准误差 | 平均值的95%置信区间 | |
| 下限 | 上限 | |||||
| 1.00 | 332 | 151.2440 | 20.63693 | 1.13260 | 149.0160 | 153.4720 | 
| 2.00 | 104 | 155.0288 | 20.73900 | 2.03363 | 150.9956 | 159.0621 | 
| 3.00 | 90 | 151.2333 | 16.39817 | 1.72852 | 147.7988 | 154.6679 | 
| 总计 | 526 | 151.9905 | 20.01889 | .87287 | 150.2758 | 153.7052 |