Table 1. Characteristics of two group patients divided by PPCs.
| Characteristic | PPCs | P | |
|---|---|---|---|
| Yes (n=52) | No (n=481) | ||
| Age (years), mean ± SD | 59.67±7.98 | 61.84±8.69 | 0.086 |
| Gender (female), n (%) | 19 (36.5) | 206 (42.8) | 0.460 |
| BMI (kg/m2), mean ± SD | 23.62±3.29 | 23.29±2.96 | 0.456 |
| Current or former smokers, n (%) | 30 (57.7) | 240 (49.9) | 0.309 |
| Preoperative ALB (g/L) | 41.80±4.90 | 42.46±4.03 | 0.273 |
| Preoperative hypoalbuminemia, n (%) | 3 (5.8) | 13 (2.7) | 0.198 |
| Postoperative ALB (g/L), mean ± SD | 34.94±4.61 | 37.92±4.88 | <0.001 |
| Postoperative hypoalbuminemia, n (%) | 23 (44.2) | 108 (22.5) | 0.001 |
| ÄALB, median (95% CI) | 0.16 (0.09–0.21) | 0.12 (0.06–0.16) | <0.001 |
| Blood loss (mL), median (95% CI) | 100 (32.5–127.5) | 80 (40–150) | 0.302 |
| ASA score, n (%) | <0.001 | ||
| 2 | 45 (86.5) | 384 (79.8) | |
| 3 | 7 (13.5) | 90 (18.7) | |
| 4 | 0 | 7 (1.5) | |
| Perioperative morbidity, n (%) | |||
| COPD | 13 (25.0) | 111 (23.1) | 0.732 |
| Hypertension | 16 (30.8) | 120 (24.9) | 0.402 |
| Diabetes | 3 (5.6) | 51 (10.6) | 0.341 |
| CHD | 2 (3.8) | 26 (5.4) | 1.000 |
| Previous malignancy | 5 (9.6) | 38 (7.9) | 0.596 |
| Pulmonary function (L), mean ± SD | |||
| FEV1 | 2.13±0.62 | 2.47±2.22 | 0.276 |
| TNM stage, n (%) | 0.595 | ||
| I | 39 (75) | 340 (70.7) | |
| II | 7 (13.5) | 74 (15.4) | |
| III | 4 (7.7) | 58 (12.1) | |
| IV | 2 (3.8) | 9 (1.9) | |
| Extent of resection, n (%) | 0.866 | ||
| Lobectomy | 40 (76.9) | 360 (74.8) | |
| Segmentectomy | 12 (23.1) | 121 (25.2) | |
| Pathology, n (%) | 0.815 | ||
| Adenocarcinoma | 36 (69.2) | 342 (71.1) | |
| SCC | 10 (19.2) | 97 (20.2) | |
| Others | 6 (11.5) | 42 (8.7) | |
PPCs, postoperative pulmonary complications; BMI, body mass index; ALB, albumin; ÄALB, postoperative decrease in serum albumin; ASA, American Society of Anesthesiologists; COPD, chronic obstructive pulmonary disease; CHD, coronary heart disease; FEV1, forced expiratory volume in 1 second; SCC, squamous cell carcinoma.