| 指标 | 频发组(n = 47) | 非频发组(n = 53) | t | P |
| 年龄(岁) | 67.6 ± 6.7 | 58.2 ± 4.9 | 9.823 | 0.000 |
| 透析病程(月) | 131.5 ± 36.1 | 98.2 ± 18.7 | 8.394 | 0.000 |
| BMI (kg/m2) | 19.7 ± 1.2 | 21.6 ± 1.1 | 8.449 | 0.000 |
| 透析前MAP (mmHg) | 94.5 ± 14.8 | 88.6 ± 12.9 | 7.764 | 0.000 |
| 血流量(ml/min) | 227.6 ± 37.8 | 225.3 ± 36.9 | 0.547 | 0.172 |
| 透析液温度(℃) | 36.5 ± 0.5 | 36.5 ± 0.3 | 0.297 | 0.684 |
| 超滤液量(ml) | 3427.6 ± 401.8 | 2566.8 ± 337.1 | 11.163 | 0.000 |