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Table 4 Age adjusted rates of in-hospital mortality among patients admitted to CCU or ICU versus medical hospital wards by sex: direct adjustment methoda

From: Sex differences in in-hospital mortality following a first acute myocardial infarction: symptomatology, delayed presentation, and hospital setting

  

Male

Female

  

CCU or ICU

Medical ward

CCU or ICU

Medical ward

Age groups

Standard Population

Death rate %

Expected # death

Death rate %

Expected # death

Death rate %

Expected # death

Death rate %

Expected # death

All ages

4859

        

18–54

1223

0.53

6.5

0.97

11.9

1.10

13.5

2.70

33.0

55–65

1245

1.78

22.2

1.84

22.9

1.72

21.4

1.52

18.9

66–78

1289

2.77

35.7

3.65

47.0

2.95

38.0

3.97

51.2

79 +

1102

5.80

63.9

6.67

73.5

7.08

78.0

12.03

132.6

Total number of deaths expected

 

128

 

155

 

151

 

236

Crude rates

2.1 %

3.5 %

3.3 %

7.8 %

Age adjusted rates

128/4859 = 2.6 %

155/4859 = 3.2 %

151/4859 = 3.1 %

236/4859 = 4.9 %

  1. Abbreviations: CCU coronary care unit, ICU intensive care unit
  2. aDirect adjustment method is one that calculates a weighted average of the group’s age-specific mortality rates where the weights represent the age-specific sizes of a standard population