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Table 1 General characteristics of the total study population

From: Comparing Charlson and Elixhauser comorbidity indices with different weightings to predict in-hospital mortality: an analysis of national inpatient data

Parameters

Alive cohort (%)

Mortality cohort (%)

SMD

aTotal population: N = 6,094,672

5,952,005 (97.7)

142,667 (2.3)

 

Females

3,280,823 (55.1)

63,912 (44.8)

0.208

Age groups

1.006

 20–24 years

215,672 (3.6)

292 (0.2)

 

 25–29 years

327,562 (5.5)

375 (0.3)

 

 30–34 years

415,022 (7.0)

526 (0.4)

 

 35–39 years

348,591 (5.9)

718 (0.5)

 

 40–44 years

299,985 (5.0)

1368 (1.0)

 

 45–49 years

350,899 (5.9)

2503 (1.8)

 

 50–54 years

408,028 (6.9)

4312 (3.0)

 

 55–59 years

430,721 (7.2)

6503 (4.6)

 

 60–64 years

466,543 (7.8)

9068 (6.4)

 

 65–69 years

528,374 (8.9)

13,322 (9.3)

 

 70–74 years

554,612 (9.3)

16,899 (11.8)

 

 75–79 years

535,543 (9.0)

19,888 (13.9)

 

 80–84 years

509,225 (8.6)

24,853 (17.4)

 

 85–89 years

365,924 (6.1)

24,042 (16.9)

 

 90–94 years

161,236 (2.7)

14,156 (9.9)

 

 95+ years

34,068 (0.6)

3842 (2.7)

 

Hospital types

0.157

 University (level 1)

1,078,612 (18.1)

29,379 (20.6)

 

 Tertiary care (level 2)

3,274,382 (55.0)

83,686 (58.7)

 

 Basic care (level 3)

736,465 (12.4)

14,863 (10.4)

 

 Basic care (level 4)

671,182 (11.3)

10,695 (7.5)

 

 Basic care (level 5)

191,364 (3.2)

4044 (2.8)

 

Number of Charlson comorbidities

1.234

 0

3,642,650 (61.2)

17,465 (12.2)

 

 1–2

1,907,761 (32.1)

80,876 (56.7)

 

  > = 3

401,594 (6.7)

44,326 (31.1)

 

Number of Elixhauser comorbidities

1.039

 0

2,509,169 (42.2)

11,036 (7.7)

 

 1–2

2,106,780 (35.4)

43,494 (30.5)

 

  > = 3

1,336,056 (22.4)

88,137 (61.8)

 
  1. Abbreviations: SMD standardized mean difference between alive and mortality cohort
  2. aTotal population presented in row percentage