Table 4.
Demographic and clinical characteristics of elderly cystectomy patients dichotomized according to the optimal CRP/albumin ratio cut-off value (0.1) before and after propensity score matching.
| Variable | Before propensity score matching | After propensity score matching | ||||||
|---|---|---|---|---|---|---|---|---|
| CRP/albumin ratio <0.1 group (n = 206) | CRP/albumin ratio ≥0.1 group (n = 136) | SMD | P value | CRP/albumin ratio <0.1 group (n = 107) | CRP/albumin ratio ≥0.1 group (n = 107) | SMD | P value | |
| Sex (male) | 171 (83.0) | 109 (80.1) | -0.072 | 0.567 | 85 (79.4) | 86 (80.4) | 0.023 | >0.999 |
| Age (years) | 71.5 ± 4.7 | 73.0 ± 5.0 | 0.297 | 0.005 | 72.5 ± 5.1 | 72.4 ± 4.8 | -0.011 | 0.932 |
| Body mass index (kg/m2) | 24.3 ± 2.8 | 23.4 ± 3.5 | -0.263 | 0.008 | 23.9 ± 3.0 | 23.6 ± 3.4 | -0.107 | 0.352 |
| ASA physical status | 0.096 | 0.427 | 0.126 | 0.405 | ||||
| ≤2 | 180 (87.4) | 114 (83.8) | 5 (88.8) | 90 (84.1) | ||||
| 3 | 26 (12.6) | 22 (16.2) | 12 (11.2) | 17 (15.9) | ||||
| Diabetes mellitus | 53 (25.7) | 26 (19.1) | -0.167 | 0.190 | 23 (21.5) | 21 (19.6) | -0.047 | 0.851 |
| Hypertension | 108 (52.4) | 67 (49.3) | -0.063 | 0.582 | 55 (51.4) | 56 (52.3) | 0.019 | >0.999 |
| Coronary artery disease | 13 (6.3) | 14 (10.3) | 0.131 | 0.220 | 8 (7.5) | 10 (9.3) | 0.061 | 0.804 |
| Cerebrovascular disease | 9 (4.4) | 7 (5.1) | 0.035 | 0.796 | 3 (2.8) | 6 (5.6) | 0.126 | 0.508 |
| COPD | 10 (4.9) | 7 (5.1) | 0.013 | >0.999 | 7 (6.5) | 5 (4.7) | -0.084 | 0.774 |
| Tumor stage | -0.056 | 0.639 | -0.020 | >0.999 | ||||
| <3 | 137 (66.5) | 94 (69.1) | 74 (69.2) | 75 (70.1) | ||||
| ≥3 | 69 (33.5) | 42 (30.9) | 33 (30.8) | 32 (29.9) | ||||
| Tumor grade | 0.048 | 0.747 | 0.127 | 0.625 | ||||
| 2 | 6 (2.9) | 3 (2.2) | 3 (2.8) | 1 (0.9) | ||||
| 3 | 200 (97.1) | 133 (97.8) | 104 (97.2) | 106 (99.1) | ||||
| Neoadjuvant chemotherapy | 44 (21.4) | 34 (25.0) | 0.084 | 0.433 | 26 (24.3) | 27 (25.2) | 0.022 | >0.999 |
| White blood cells (103/μL) | 6.351 ± 2.021 | 7.424 ± 3.327 | 0.322 | <0.001 | 6.610 ± 2.121 | 6.560 ± 1.948 | -0.015 | 0.856 |
| Hemoglobin (g/dL) | 12.4 ± 1.8 | 11.2 ± 1.9 | -0.601 | <0.001 | 11.7 ± 1.8 | 11.6 ± 1.8 | -0.046 | 0.645 |
| eGFR (mL/min/1.73m2) | 74.3 ± 14.1 | 70.2 ± 17.5 | -0.236 | 0.017 | 71.8 ± 14.4 | 71.9 ± 16.5 | 0.005 | 0.966 |
| Uric acid (mg/dL) | 5.1 ± 1.4 | 5.2 ± 1.7 | 0.099 | 0.327 | 5.1 ± 1.4 | 5.2 ± 1.7 | 0.061 | 0.660 |
Continuous variables are presented as the mean ± standard deviation and categorical variables as number (%). CRP: C-reactive protein; SMD: standardized mean difference; ASA: American Society of Anesthesiologists; COPD: chronic obstructive pulmonary disease; eGFR: estimated glomerular filtration rate.