Table 1

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

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)†


APS = Acute Physiology Score; APACHE = Acute Physiology and Chronic Health Evaluation; IQR = Interquartile range

*Values are number (percentage) unless indicated otherwise; †P < 0.05 compared to pre-protocol period.

Afessa et al. BMC Emergency Medicine 2007 7:10   doi:10.1186/1471-227X-7-10

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