1.
结石清除组与结石残留组患者基本信息及结石因素比较
Comparison of demographic data and stone characteristics between stone-free group and stone-residual group
| Items | Stone-free group (n=123) | Stone-residual group (n=78) | P value |
| Statistical significance was set at P<0.05; a, Chi-square test; b, Student’s t test; c, Mann-Whitney U test. BMI, body mass index. | |||
| Male, n (%) | 75.0 (61.0) | 44.0 (56.4) | 0.163a |
| Age/year, x±s | 51.4±14.4 | 50.5±13.4 | 0.655b |
| BMI/(kg/m2), median (min-max) | 25.0 (18.0-33.1) | 24.5 (17.7-35.0) | 0.475c |
| History of urologic operation, n (%) | 32.0 (26.0) | 27.0 (34.6) | 0.192a |
| Hydronephrosis, n (%) | 67.0 (54.5) | 53.0 (68.0) | 0.058a |
| Low calyceal stones, n (%) | 75 (61.0) | 51.0 (65.4) | 0.887a |
| Stone number, median (min-max) | 1.0 (1.0-5.0) | 1.5 (1.0-5.0) | 0.000c |
| Stone volume/mm3, median (min-max) | 492.7 (8.37-15 055.4) | 1 406.7 (133.2-11 992.0) | 0.000c |
| Mean stone density/Hu, x±s | 548.7±273.7 | 734.2±299.1 | 0.000b |
| Maximal stone density/Hu, median (min-max) | 1 049.0 (240.0-2 134.0) | 1 266.00 (304.0-1 819.0) | 0.000c |
| Operation time/min, median (min-max) | 89.0 (20.0-326.0) | 111.0 (22.0-282.0) | 0.000c |