Table 1 Overall demographics for each database (no exclusion criteria applied), grouped by gender

No. of patients

26,121

20,399

75,188

64,044

7196

5090

No. of hospital admissions

32,950

26,026

89,391

76,802

7810

5559

No. of ICU stays

34,469

27,063

108,379

92,303

8176

5767

Age (years), median (IQR)

61 (30)

64 (34)

64 (22)

66 (25)

65 (24)

62 (27)

ICU LOS^* (days), median (IQR)

2.1 (3.3)

2.1 (3.4)

1.6 (2.1)

1.6 (2.2)

2.0 (3.7)

2.0 (3.1)

OASIS, median (IQR)

29 (12)

30 (13)

27 (14)

29 (14)

33 (17)

33 (18)

ICU mortality (%)

7.4

8.0

8.9

9.1

12.8

11.7