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Table 1 Continuous variables tested in patients with and without SSI

From: Incidence and predictors of surgical site infection after ORIF in calcaneus fractures, a retrospective cohort study

Variables Patients with SSI (mean, median, range) (n = 66) Patients without SSI (mean, median, range) (n = 615) P value
Age (years) 41.4, 39 (18–66) 42.5, 43 (18–74) 0.43910
Hospital stay (days) 31.0, 21.5 (7–263) 16.3, 15 (4–76) 0.00701**
Preoperative stay (days) 5.7, 5 (0–27) 5.7, 5 (0–37) 0.97616
Operation duration (min) 117.4, 120 (35–250) 106.7, 95 (30–335) 0.05639
Intraoperative blood loss (ml) 155.6, 100 (10–1000) 122.2, 100 (10–800) 0.01501*
Lengths of incision (cm) 9.2, 8.5 (0.5–20) 9.0, 10 (0.5–27) 0.76514
Intraoperative temperature (°C) 35.8, 36.2 (34.8–36.9) 36.3, 36.2 (35.1–37.2) 0.03728*
  1. Significant Variables (*P < 0.05; **P < 0.01; ****P < 0.0001)