Table 3.
Baseline Characteristics of Patients with Low and High NLR
| Variables | Lower NLR (NLR <2.71) | Higher NLR (NLR ≥2.71) | p |
|---|---|---|---|
| No. of patients | 226 | 179 | |
| fUTI(%) | 7 (3.1) | 27 (15.1) | < 0.001 |
| Gender(%) | 0.887 | ||
| Female | 76 (33.6) | 59 (33) | |
| Male | 150 (66.4) | 120 (67) | |
| Age(years) | 46.0 ± 14.1 | 51.9 ± 14.3 | < 0.001 |
| BMI(kg/m2) | 23.4 (21.0, 25.7) | 22.8 (20.9, 25.7) | 0.441 |
| Diabetes | 0.562 | ||
| No | 206 (91.2) | 166 (92.7) | |
| Yes | 20 (8.8) | 13 (7.3) | |
| Hypertension (%) | 0.121 | ||
| No | 187 (82.7) | 137 (76.5) | |
| Yes | 39 (17.3) | 442 (23.5) | |
| Heart disease (%) | 0.921 | ||
| No | 209 (92.5) | 166 (92.7) | |
| Yes | 17 (7.5) | 13 (7.3) | |
| Hb(g/L) | 145.0 (132.0, 156.0) | 141.0 (126.0, 155.0) | 0.084 |
| Neutrophil count(×109) | 3.6 (3.0, 4.3) | 4.8 (3.9, 5.8) | < 0.001 |
| Lymphocyte count(×109) | 1.8 (1.5, 2.1) | 1.3 (1.0, 1.6) | < 0.001 |
| Albumin(g/L) | 42.9 (40.0, 45.2) | 42.4 (39.4, 44.5) | 0.338 |
| Globin(g/L) | 30.3 (27.2, 33.2) | 30.5 (27.6, 34.0) | 0.356 |
| Stone size(cm) | 2.0 (1.8, 2.5) | 2.1 (2.0, 2.5) | 0.054 |
| Stone number | 0.731 | ||
| Single | 33 (14.6) | 24 (13.4) | |
| Multiple | 193 (85.4) | 1155 (86.6) | |
| Staghorn stone | 0.084 | ||
| No | 206 (91.2) | 171 (95.5) | |
| Yes | 220 (8.8) | 8 (4.5) | |
| Puncture channel | 0.057 | ||
| Small channel | 198 (87.6) | 1167 (93.3) | |
| Standard channel | 28 (12.4) | 112 (6.7) | |
| OT(minutes) | 70.0 (56.2, 85.0) | 66.5 (58.0, 85.0) | 0.771 |
Abbreviations: fUTI, febrile urinary tract infection; BMI, body mass index; Hb, hemoglobin; NLR, neutrophil–lymphocyte ratio; OT, operation time.