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Table 1 Demographic characteristics and co-morbidities of the 351 cellulitis cases

From: Development of a prediction model for bacteremia in hospitalized adults with cellulitis to aid in the efficient use of blood cultures: a retrospective cohort study

  All (n = 351) Positive blood culture (n = 33) Negative blood culture (n = 318) Odds ratio (95 % CI) p-value
Mean (SD) age in years 62 (19.8) 68 (17.7) 61 (19.9) N/A 0.055
Patients aged ≥65 162 (46.2) 21 (63.6) 141 (44.3) 2.20 (1.05–4.62) 0.034
Mean (SD) durationa in days 4.5 (4.4) 3 (3.7) 4 (4.5) N/A 0.155
Male sex 211 (60.1) 21 (63.6) 190 (59.7) 0.85 (0.40–1.79) 0.664
Wound 83 (23.6) 6 (18.2) 77 (24.2) 0.70 (0.28–1.75) 0.438
Purulent 60 (17.1) 9 (27.3) 51 (16.0) 1.96 (0.86–4.47) 0.103
Diabetes mellitus 95 (27.1) 14 (42.4) 81 (25.5) 2.16 (1.03–4.50) 0.37
Autoimmune disease 13 (3.7) 1 (3.0) 12 (3.8) 0.80 (0.10–6.33) >0.999
Solid malignancy 55 (15.7) 9 (27.3) 46 (14.5) 2.22 (0.97–5.07) 0.54
Hematological malignancy 11 (3.1) 2 (6.1) 9 (2.8) 2.22 (0.46–10.71) 0.277
Liver cirrhosis 25 (7.1) 6 (18.2) 19 (6.0) 3.50 (1.29–9.49) 0.021
HIV infection 3 (0.9) 0 (0.0) 3 (0.9) N/A >0.999
Organ transplantation 2 (0.6) 1 (0.3) 1 (3.0) 9.91 (0.61–162.18) 0.179
Peripheral artery occlusive disease 10 (2.8) 1 (3.0) 9 (2.8) 1.07 (0.13–8.74) >0.999
Coronary artery bypass graft 6 (1.7) 0 (0.0) 6 (1.9) N/A >0.999
Fracture 6 (1.7) 0 (0.0) 6 (1.9) N/A >0.999
Flap 8 (2.3) 1 (3.0) 7 (2.2) 1.39 (0.17–11.64) 0.550
Lymph node dissection 17 (4.8) 2 (6.1) 15 (4.7) 1.30 (0.29–5.97) 0.667
  1. The data are expressed as number (%) unless otherwise indicated
  2. p-values were determined by chi-squared or Fisher’s exact tests, or by independent t-test
  3. CI confidence interval, HIV human immunodeficiency virus, SD standard deviation
  4. aDuration following onset of disease, prior to admission