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Table 1 General characteristics of adults ≥ 65 years receiving invasive mechanical ventilation

From: Effect of dementia on the incidence, short-term outcomes, and resource utilization of invasive mechanical ventilation in the elderly: a nationwide population-based study

 

With dementia

Without dementia

OR (95%CI)

p value

5770 (2.2)

253,853 (97.8)

  

Gender women

2702 (46.8)

96,946 (38.2)

1.43 (1.35, 1.50)

< 0.001

Age

 65–74 years

1787 (31.0)

131,717 (51.9)

Ref.

 

 75–84 years

3166 (54.9)

108,990 (42.9)

2.14 (2.02, 2.27)

< 0.001

 > 84 years

817 (14.1)

13,146 (5.2)

4.58 (4.21, 4.99)

< 0.001

Charlson Index score

 0 points

1891 (32.8)

77,478 (30.5)

Ref.

 

 1–2 points

2932 (50.8)

124,467 (49.0)

0.97 (.91, 1.02)

0.235

 3–4 points

734 (12.7)

37,678 (14.8)

0.80 (0.73, 0.87)

< 0.001

 > 4 points

213 (3.7)

14,230 (5.6)

0.61 (0.53, 0.71)

< 0.001

Main Charlson comorbidities

 Diabetes

1476 (25.6)

59,879 (23.6)

1.10 (1.03, 1.14)

< 0.001

 Cerebrovascular disease

1048 (18.2)

18,972 (7.5)

2.75 (2.57, 2.94)

< 0.001

 COPD

1005 (17.4)

54,918 (21.6)

0.76 (0.71, 0.82)

< 0.001

 Heart failure

836 (14.5)

47,921 (18.9)

0.73 (0.68, 0.78)

< 0.001

ICD-9-CM main diagnosis

 Circulatory

1751 (30.3)

98,683 (38.9)

0.69 (0.65, 0.73)

< 0.001

 Respiratory

984 (17.0)

39,379 (15.5)

1.12 (1.04, 1.20)

0.001

 Injury-poisoning

910 (15.8)

27,338 (10.8)

1.55 (1.44, 1.67)

< 0.001

 Digestive

805 (14.0)

29,621 (11.7)

1.23 (1.14, 1.32)

< 0.001

 Cancer

364 (6.3)

29,229 (11.5)

0.52 (0.47, 0.58)

< 0.001

No. of hospital beds

 < 200

691 (12.0)

26,929 (10.6)

Ref

 

 200–500

1927 (33.4)

71,698 (28.2)

1.05 (0.96, 1.14)

0.302

 501–1000

1774 (30.8)

87,898 (34.6)

0.79 (0.72, 0.86)

< 0.001

 > 1000

1378 (23.9)

67,327 (26.5)

0.80 (0.73, 0.87)

< 0.001

DRG surgical

2455 (42.6)

145,001 (57.2)

0.56 (0.53, 0.59)

< 0.001

Mechanical ventilation ≥ 96 h

1729 (30.0)

85,162 (33.6)

0.85 (0.80, 0.90)

< 0.001

In-hospital mortality (CFR)

2992 (51.9)

123,445 (48.6)

1.14 (1.08, 1.20)

< 0.001

  1. Data presented as number of cases (%)
  2. OR odds ratio, CI confidence interval, COPD chronic obstructive pulmonary disease, DRG diagnosis-related group, CRF case fatality rate