TABLE 2.
Baseline and surgical characteristics of the 3,209 participants from eight trials.
| TCS group (n = 1,670) | Control group (n = 1,539) | |
|---|---|---|
| Baseline characteristics | ||
| Age - years (mean, SD) missing not measured |
65.0 (±12.3) 0 0 |
65.4 (±12.6) 0 0 |
| Sex ratio – no M:F (ratio) missing not measured |
1,023/647 (1.6) 0 0 |
954/585 (1.6) 0 0 |
| ASA Physical Status score – no, (%) 1 2 3 4 missing not measured |
130/1,544 (8.4) 890/1,544 (57.6) 506/1,544 (32.8) 18/1,544 (1.2) 31 95 |
140/1,353 (10.3) 790/1,353 (58.4) 411/1,353 (30.4) 12/1,353 (0.9) 88 98 |
| BMI - kg/m2 (mean, SD) missing not measured |
25.4 (±4.7) 27 95 |
25.2 (±4.7) 32 98 |
| Active smoking– no, (%) missing not measured |
245/1,009 (24.3) 7 654 |
205/1,018 (20.1) 15 506 |
| Diabetes mellitus (any type) – no, (%) missing not measured |
252/1,668 (15.1) 2 0 |
252/1,538 (16.4) 1 0 |
| COPD – no, (%) missing not measured |
83/988 (8.4) 0 682 |
113/1,006 (11.2) 2 531 |
| Previous midline incision – no (%) missing not measured |
159/680 (23.4) 0 990 |
148/696 (21.3) 1 842 |
| Surgical characteristics | ||
| Incision type – no, (%) Midline Non-midline missing not measured |
1,553/1,670 (93.0) 117/1,670 (7.0) 0 0 |
1,443/1,539 (93.8) 96/1,539 (6.2) 0 0 |
| Procedure type – no, (%) Elective Emergent missing not measured |
1,572/1,670 (94.1) 98/1,670 (5.9) 0 0 |
1,432/1,539 (93.0) 107/1,539 (7.0) 0 0 |
| Type of surgery – no, (%) Upper gastrointestinal Small intestine Colorectal HPB Other missing not measured |
228/1,668 (13.7) 63/1,668 (3.8) 831/1,668 (49.8) 330/1,668 (19.8) 216/1,668 (12.9) 2 0 |
213/1,539 (13.8) 51/1,539 (3.3) 792/1,539 (51.5) 276/1,539 (17.9) 207/1,539 (13.5) 0 0 |
| Wound classification (CDC criteria) – no, (%) 1 2 3 4 missing not measured |
470/1,547 (30.4) 921/1,547 (59.5) 79/1,547 (5.1) 77/1,547 (5.0) 0 123 |
406/1,416 (28.7) 864/1,416 (61.0) 63/1,416 (4.4) 83/1,416 (5.9) 0 123 |
| Duration of surgery – min (mean, SD) missing not measured |
188 (±106) 7 218 |
192 (±106) 9 221 |
Abbreviations: CDC, centers for disease control and prevention; BMI, body mass index; COPD, chronic obstructive pulmonary disease; HPB, hepatopancreatobiliary.
Data are presented as mean and standard deviation (SD) or as count with percentage of the available data. Missing presents the number of participants with missing data at random. Not measured presents the number of participants for which a complete variable was not recorded in one or more trials.