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Table 4 Univariable analysis of demographic outcomes by specialty

From: Antibiotic prescribing in general medical and surgical specialties: a prospective cohort study

Variable Measure Medicine N = 162 Surgery N = 164 P value*
Gender - Male n (%) 76 (47) 84 (51) 0.441
Age at admission Mean (SD) 70 (18) 55 (22)
Median (Interquartile range) 74 (27–93) 55 (18–92) < 0.001
Range (Minimum – Maximum) 21–104 18–95
Length of Stay Mean (SD) 11 (15) 16 (24) 0.0553
Median (Interquartile range) 7 (1–76) 5 (2–106) < 0.001
Range (Minimum – Maximum) 1–95 24–160
Charlson comorbidity index (age adjusted) n (%)    
  Low (score of 0–2) 30 (19) 89 (54) < 0.001
  Moderate (score of 3–4) 39 (24) 23 (14)
  Severe (score of ≥5) 93 (57) 52 (32)
30 day readmission n (%) 43 (27) 29 (18) < 0.001
Mortality in admission episode n (%) 10 (6) 10 (6) 0.977
  1. Abbreviations: n count, SD standard deviation
  2. *P values calculated using Pearson Chi-Squared test or t-test where appropriate.