Table 1 Patient characteristics
Categorical factor | Frequency (valid %) | ||
SSI (n = 14) | Non-SSI (n = 36) | All patients (n = 50) | |
Procedure | |||
Planned | 6 (42.9%) | 14 (38.9%) | 20 (40.0%) |
Emergency | 8 (57.1%) | 22 (61.1%) | 30 (60.0%) |
Ethnicity | |||
White British | 13 (92.9%) | 25 (69.4%) | 38 (76.0%) |
Non-White British | 1 (7.1%) | 11 (30.6%) | 12 (24.0%) |
Number of pregnancies | |||
1 | 2 (14.3%) | 14 (38.9%) | 16 (32.0%) |
2 | 4 (28.6%) | 7 (19.4%) | 11 (22.0%) |
3 | 5 (35.7%) | 7 (19.4%) | 12 (24.0%) |
4 | 1 (7.1%) | 5 (13.9%) | 6 (12.0%) |
5 | 0 (0.0%) | 2 (5.6%) | 2 (4.0%) |
6 | 1 (7.1%) | 1 (2.8%) | 2 (4.0%) |
7 or more | 1 (7.1%) | 0 (0.0%) | 1 (2.0%) |
Number of live births | |||
1 | 2 (14.3%) | 18 (50.0%) | 20 (40.0%) |
2 | 10 (71.4%) | 6 (16.7%) | 16 (16.7%) |
3 | 1 (7.1%) | 7 (19.4%) | 8 (16.0%) |
4 | 0 (0.0%) | 4 (11.1%) | 4 (8.0%) |
5 | 0 (0.0%) | 1 (2.8%) | 1 (2.0%) |
6 | 0 (0.0%) | 0 (0.0%) | 0 (.0.0%) |
7 or more | 1 (7.1%) | 0 (0.0%) | 1 (2.0%) |
Number of C-sections (n = 49) | |||
1 | 5 (38.5%) | 25 (69.4%) | 30 (61.2%) |
2 | 6 (46.2%) | 7 (19.4%) | 13 (26.5%) |
3 | 2 (15.4%) | 2 (5.6%) | 4 (8.2%) |
4 | 0 (0.0%) | 2 (5.6%) | 2 (4.1%) |
Variable | Mean (SD) | ||
SSI (n = 14) | Non-SSI (n = 36) | All patients (n = 50) | |
Number of C-sections (n = 49) | 1.77 (0.725) | 1.47 (0.845) | 1.55 (0.818) |
Blood loss (ml) (n = 50) | 472 (149) | 692 (364) | 630 (332) |
Pre-operative haemoglobin (g/L) (n = 49) | 114 (8.03) | 119 (13.7) | 117 (12.5) |
Post-operative haemoglobin (g/L) (n = 43) | 101.4 (8.73) | 101 (11.8) | 101 (11.0) |
Pre-operative white blood cell count (×109/L) (n = 48) | 10.7 (3.91) | 11.1 (3.87) | 11.0 (3.84) |
Post-operative white blood cell count (× 109/L (n = 46) | 10.9 (5.09) | 13.1 (3.81) | 12.5 (4.23) |
Gestational age (weeks) | 39.7 (1.28) | 39.2 (1.67) | 39.4 (1.53) |
Body mass index (kg.m−2) | 35.2 (3.89) | 35.3 (3.99) | 35.3 (3.92) |
Body temperature (°C) (n = 50) | 36.8 (0.31) | 36.8 (0.25) | 36.8 (0.26) |
Abdominal temperature Day 2 (°C) (n = 50) | 33.4 (0.79) | 33.8 (0.80) | 33.7 (0.81) |
Wound temperature Day 2 (°C) (n = 50) | 35.1 (0.53) | 34.9 (0.69) | 35.0 (0.65) |
Abdominal temperature Day 7 (°C) (n = 47) | 32.5 (0.98) | 33.5 (0.98) | 33.2 (1.07) |
Wound temperature Day 7 (°C) (n = 47) | 34.4 (0.77) | 34.5 (0.80) | 34.5 (0.78) |
Abdominal temperature Day 15 (°C) (n = 44) | 31.7 (1.87) | 32.6 (1.01) | 32.3 (1.36) |
Wound temperature Day 15 (°C) (n = 44) | 33.7 (1.11) | 34.1 (0.86) | 34.0 (0.95) |
Wound minus abdominal temperature difference Day 2 (°C) | 1.73 (0.96) | 1.12 (0.77) | 1.29 (0.86) |
Wound minus abdominal temperature difference Day 7 (°C) (n = 47) | 1.92 (1.00) | 1.09 (1.01) | 1.34 (1.07) |
Wound minus abdominal temperature difference Day 15 (°C) (n = 44) | 1.96 (1.59) | 1.56 (1.29) | 1.68 (1.36) |