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Table 1 Demographics of ICU patients (N = 7717)

From: Predictive models for pressure ulcers from intensive care unit electronic health records using Bayesian networks

Variable Total PU group (N = 590) Non-PU group (N = 7127) Statistic p value
Gender, freq (%) Male 4426 378 (64.1%) 4048 (56.8%) \( {x}^2=1.9 \) <.001
  Female 3291 212 (35.9%) 3079 (43.2%)   
Race/Ethnicity, freq (%) White 6345 469 (79.5%) 5876 (82.4%) \( {x}^2=3.15 \) .076
  Non-white 1372 121 (20.5%) 1251 (17.6%)   
Age (years), mean (SD) 57.7 (15.9) 59.0 (15.5) 57.6 (16) t = 4.52 .034
Length of ICU stay (days), mean (SD) 10.1 (10) 13.4 (14.3) 9.8 (9.6) t = 70.56 <.001
  1. Note: SD = Standard Deviation