Table 1.
Patients demographics
| Drain group (%) N = 70 | No drain group (%) N = 74 | p-value | |
|---|---|---|---|
| Age, year (mean) | 61.8 | 62.1 | 0.914 |
| BMI, kg/m2 (mean) | 28.4 | 29.8 | 0.626 |
| Diabetes | 7 (10.1) | 13 (17.3) | 0.213 |
| COPD | 17 (24.6) | 11 (14.7) | 0.131 |
| Current smoker | 30 (45.5) | 24 (34.8) | 0.206 |
| CHF | 0 | 3 (4) | 0.096 |
| ASA class | |||
| 1 | 2 (3.0) | 3 (4.2) | 0.721 |
| 2 | 39 (59.1) | 46 (63.8) | 0.563 |
| 3 | 24 (36.4) | 23 (32.0) | 0.584 |
| Recurrent hernia | 11 (15.9) | 14 (18.7) | 0.666 |
| Hernia defect, cm (mean) | 8.13 | 7.90 | 0.804 |
| <5 cm | 11 (20.8) | 16 (28.6) | 0.345 |
| 5–10 cm | 21 (39.6) | 23 (41.1) | 0.878 |
| >10 cm | 21 (39.6) | 17 (30.3) | 0.310 |
| Charlson comorbidity index (mean) | 7.91 | 12.80 | 0.831 |
BMI body mass index, COPD chronic obstructive pulmonary disease, CHF cardiac heart failure with ejection fraction <35%, ASA physical status classification according to American Society of Anesthesiologists, p-value with level of significance at 0.05