Table 4.
The comparison of one-month stone free rate (SFR) and estimated OR for non-one-month SFR
| Variables | One-month stone free | p-value | Multivariate analysis | |
|---|---|---|---|---|
| Yes (n = 255) | No (n = 55) | aOR (95%CI) | ||
| Demography | ||||
| Age | 50 (42.00–60.00) | 45 (35.00–57.00) | 0.086 | 0.99 (0.96, 1.01) |
| Gender | ||||
| Male | 162 (82.23) | 35 (17.77) | 0.988 | – |
| Female | 93 (82.3) | 20 (17.7) | ||
| BMI | 24.82 (22.86–27.06) | 24.22 (22.30–26.81) | 0.407 | – |
| Stent in ureter | 0.494 | – | ||
| Yes | 47 (85.45) | 8 (14.55) | ||
| No | 208 (81.57) | 47 (18.43) | ||
| Infection | 0.203 | – | ||
| Yes | 193 (80.75) | 46 (19.25) | ||
| No | 62 (87.32) | 9 (12.68) | ||
| Disease history | ||||
| Stone | < 0.001 | 2.48 (1.24, 4.97) | ||
| Yes | 75 (71.43) | 30 (28.57) | ||
| No | 180 (87.8) | 25 (12.2) | ||
| Other kidney diseases | 0.756a | – | ||
| Yes | 15 (78.95) | 4 (21.05) | ||
| No | 240 (82.47) | 51 (17.53) | ||
| DM | 0.533 | – | ||
| Yes | 41 (85.42) | 7 (14.58) | ||
| No | 214 (81.68) | 48 (18.32) | ||
| Hypertension | 0.157 | – | ||
| Yes | 75 (87.21) | 11 (12.79) | ||
| No | 180 (80.36) | 44 (19.64) | ||
| Medicine user and weakness | 0.645 | – | ||
| Yes | 27 (79.41) | 7 (20.59) | ||
| No | 228 (82.61) | 48 (17.39) | ||
| Operation | ||||
| Operation time | 75 (60.0–105.0) | 100 (65.0–150.0) | 0.002 | 1.01 (1.00, 1.01) |
| Stone number | < 0.001 | |||
| Single | 134 (94.37) | 8 (5.63) | 1 | |
| Multiple | 121 (72.02) | 47 (27.98) | 0.99 (0.28, 3.48) | |
| Stone size(mm) | < 0.001 | |||
| < 20 | 130 (91.55) | 12 (8.45) | 1 | |
| 20–29 | 80 (86.02) | 13 (13.98) | 1.00 (0.38, 2.62) | |
| 30–39 | 26 (72.22) | 10 (27.78) | 1.57 (0.49, 5.07) | |
| 40–49 | 8 (47.06) | 9 (52.94) | 2.91 (0.76, 11.11) | |
| ≥ 50 | 11 (50.00) | 11 (50.00) | 1.58 (0.37, 6.84) | |
| Composition | 0.467a | |||
| Calcium oxalate | 58 (82.86) | 12 (17.14) | – | |
| Calcium phosphate | 19 (82.61) | 4 (17.39) | – | |
| Uric acid and magnesium ammonium phosphate | 12 (100.00) | 0 (0.00) | – | |
| Complex | 166 (80.98) | 39 (19.02) | – | |
| Hydronephrosis | 0.955 | |||
| Grade 0 | 39 (82.98) | 8 (17.02) | – | |
| Grade I | 99 (82.50) | 21 (17.50) | – | |
| Grade II | 87 (82.86) | 18 (17.14) | – | |
| Grade III | 28 (80.00) | 7 (20.00) | – | |
| Grade VI | 2 (66.67) | 1 (33.33) | – | |
| CT value (ml) | 0.144 | |||
| ≤ 1000 | 183 (84.33) | 34 (15.67) | – | |
| > 1000 | 72 (77.42) | 21 (22.58) | – | |
| Guy’s stone score | < 0.001 a | |||
| Grade I | 160 (94.67) | 9 (5.33) | 1 | |
| Grade II | 84 (73.68) | 30 (26.32) | 4.44 (1.35, 14.58) | |
| Grade III | 8 (40.00) | 12 (60.00) | 15.44 (3.48, 68.55) | |
| Grade VI | 3 (42.86) | 4 (57.14) | 2.93 (0.28, 30.29) | |
The significance of bold values were p < 0.05
SFR stone free rate; aOR adjusted Odds ratio, BMI body mass index, DM diabetes mellitus, CT computer tomography
Continuous data without normal distribution are presented as median (interquartile) and performed by Wilcoxon rank; Categorical data are presented as n (%) and performed by the Chi-squared test or aFisher’s exact test, as appropriate