Table 7.

Odds ratio (OR) and 95% confidence interval (CI) of superficial surgical site infections (SSI) for patients in the intervention group with preoperative risk factors 1 week prior to operation

Risk factor	OR [CI]	Missing
Preoperative anemia	0.79 [0.18–3.37]	0
HbA1c ≥ 42 mmol/mol	1.13 [0.51–2.51]	7
BMI at operation ≥ 30	1.20 [0.64–2.27]	0
Smoking	2.12 [0.61–7.32]	10
Vitamin D < 50 nmol/L	2.53 [0.55–11.5]	20
Weekly motion ≤ 2	1.52 [0.72–3.20]	163