Table I.
Comparison of patient data.
| Research group (n=91) | Control group (n=86) | t or c2 | P-value | |
|---|---|---|---|---|
| Age, year | 48.21±5.12 | 49.13±5.29 | 1.176 | 0.241 |
| BMI, kg/cm2 | 25.62±2.26 | 25.73±2.44 | 0.311 | 0.756 |
| Operation time, min | 124.24±8.62 | 125.36±9.08 | 0.842 | 0.401 |
| Intraoperative blood loss, ml | 50.62±8.62 | 51.12±8.76 | 0.383 | 0.702 |
| Sex | 0.337 | 0.561 | ||
| Male | 79 (86.81) | 72 (83.72) | ||
| Female | 12 (13.19) | 14 (16.28) | ||
| Residential environment | 0.724 | 0.395 | ||
| Urban area | 58 (63.74) | 60 (69.77) | ||
| Rural area | 33 (36.26) | 26 (30.23) | ||
| Smoking | 1.187 | 0.276 | ||
| Yes | 72 (79.12) | 62 (72.09) | ||
| No | 19 (20.88) | 24 (27.91) | ||
| Exercise habit | 0.619 | 0.431 | ||
| Yes | 12 (13.19) | 15 (17.44) | ||
| None | 79 (86.81) | 71 (82.56) | ||
| Nationality | 1.683 | 0.195 | ||
| Han nationality | 87 (95.60) | 85 (98.84) | ||
| Minority nationality | 4 (4.40) | 1 (1.16) | ||
| ASA classification | 0.455 | 0.500 | ||
| Grade I | 43 (47.25) | 45 (52.33) | ||
| Grade II | 48 (52.75) | 41 (47.67) | ||
| Calculi site | 0.060 | 0.806 | ||
| Left kidney | 47 (51.65) | 46 (53.49) | ||
| Right kidney | 44 (48.35) | 40 (46.51) |
Data are presented as the mean ± SD or n (%). ASA, American Society of Anesthesiologists; BMI, body mass index.