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Table 4 Risk factors for infection following surgery in patients with ingrowing nails only

From: Risk factors for infection following ingrowing toenail surgery: a retrospective cohort study

  Infections / n Infection rate (95% CI) Risk ratio (95% CI) P value+
Age
  < 18 11 / 475 2.3% (1.2–4.1) 1  
 18–59 29 / 727 4.0% (2.7–5.7) 1.75 (0.87–3.54) 0.14
  ≥ 60 25 / 359 7.0% (4.6–10.1) 3.16 (1.53–6.51) < 0.01 *
Sex
 Male 32 / 737 4.3% (3.0–6.1) 1  
 Female 33 / 824 4.0% (2.8–5.6) 0.92 (0.56–1.51) 0.80
ASA
 1 44 / 1163 3.8% (2.8–5.0) 1  
  ≥ 2 21 / 398 5.3% (3.3–8.0) 1.42 (0.83–2.41) 0.19
Surgery Facility
 Hospital/Surgicentre 22 / 732 3.0% (1.9–4.5) 1  
 Office 43 / 829 5.2% (3.8–6.9) 1.77 (1.05–2.98) 0.04 *
Procedure
 Wedge Resection 31 / 743 4.2% (2.9–5.9) 1  
 Partial Resection 22 / 578 3.8% (2.4–5.7) 0.91 (0.52–1.59) 0.78
 Radical Excision 9 / 97 9.3% (4.3–16.9) 2.35 (1.08–5.01) 0.04 *
 Total Removal 2 / 46 4.3% (0.5–14.8) 1.04 (0.24–4.50) 1.00
 Multiple/other procedures 1 / 97 1.0% (0.0–5.6) 0.24 (0.03–1.77) 0.16
  1. + P value calculated using Fisher’s exact test (2-sided)
  2. * Statistically significant at p < 0.05