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Table 2 Demographics of people undergoing procedures with and without ingrowing nails

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

  No ingrowing toenail
n = 5851
Ingrowing toenail(s)
n = 1831
P value
Mean Age (SD) 52.4 (17.5) 39.3 (22.8) < 0.01* ++
Sex – Female (%) 4539 (77.6%) 1045 (57.1%) < 0.01* +
ASA 1 (%) 3642 (62.2%) 1290 (70.5%) < 0.01* +
Office based surgical Facility (%) 862 (14.7%) 875 (47.8%) < 0.01* +
Total Infections 93 77  
Infection Rate (95% CI) 1.6% (1.3 to 1.9) 4.2% (3.3 to 5.2)  
Infection – Relative Risk 1 2.72 (2.00–3.69) < 0.01* +
  1. * Statistically significant at p < 0.05
  2. + P value calculated using Fisher’s exact test (two-sided)
  3. ++ P Value calculated using Independent samples T Test, Equal variances not assumed
  4. ASA 1 = no systemic disease.