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Table 1 Difference in base-line characteristics among the three study periods*

From: Impact of introducing multiple evidence-based clinical practice protocols in a medical intensive care unit: a retrospective cohort study

Characteristics

Pre-protocol N = 2,677

Transition N = 3,513

Protocol N = 2,196

Age, yrs, mean ± SD

61.7 ± 19.3

62.3 ± 19.0

63.0 ± 19.1†

Male sex

1,405 (52.5)

1,785 (50.8)

1,156 (52.6)

White race

2,526 (94.4)

3,306 (94.1)

2,078 (94.6)

APS, Median (IQR)

40 (25–59)

41 (27–59)†

43 (30–60)†

APACHE III, Median (IQR)

55 (37–76)

56 (39–75)

58 (42–77)†

Predicted mortality, %, Median (IQR)

11.3 (3.1–29.7)

11.5 (3.5–29.2)

13.0 (4.4–31.0)†

  1. APS = Acute Physiology Score; APACHE = Acute Physiology and Chronic Health Evaluation; IQR = Interquartile range
  2. *Values are number (percentage) unless indicated otherwise; †P < 0.05 compared to pre-protocol period.