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Table 1 Comparison of cohort by type of ventilatory support

From: Non-invasive mechanical ventilation and mortality in elderly immunocompromised patients hospitalized with pneumonia: a retrospective cohort study

Variables

Non-invasive mechanical ventilation (N = 717)

Invasive mechanical ventilation (N = 1,229)

p-value

N (%)

N (%)

Age at admission, mean (SD)

75.8 (6.2)

75.3 (6.0)

0.07

Men

706 (98.5)

1216 (98.9)

0.36

Smoker

332 (46.3)

492 (40.0)

0.01

Alcohol abuse

30 (4.2)

64 (5.2)

0.31

Prior admission

203 (28.3)

409 (33.3)

0.02

Guideline concordant antibiotics

630 (87.9)

889 (72.3)

<0.01

Black

67 (9.3)

147 (12.0)

0.08

White

601 (83.8)

1014 (82.5)

0.46

Hispanic

24 (3.4)

93 (7.6)

<0.01

Married

393 (54.8)

633 (51.5)

0.16

VA priority group

 

0.97

 1

137 (19.1)

229 (18.7)

 

 2–6

509 (71.0)

876 (71.3)

 7–8

71 (9.9)

123 (10.0)

ICU admission

425 (59.3)

1124 (91.5)

<0.01

Myocardial infarction

45 (6.3)

116 (9.4)

0.02

Congestive heart failure

258 (36.0)

387 (31.5)

0.04

Peripheral vascular disease

108 (15.1)

194 (15.8)

0.67

Cerebrovascular disease

93 (13.0)

181 (14.7)

0.28

Dementia

13 (1.8)

34 (2.8)

0.19

Chronic obstructive pulmonary disease

590 (82.3)

821 (66.8)

<0.01

Rheumatologic disease

23 (3.2)

61 (5.0)

0.07

Peptic ulcer disease

24 (3.4)

44 (3.6)

0.79

Severe liver disease

5 (0.7)

17 (1.4)

0.19

Diabetes

257 (35.8)

411 (33.4)

0.28

Diabetes with complications

76 (10.6)

119 (9.7)

0.52

Chronic renal disease

85 (11.9)

174 (14.2)

0.15

Hemi/Paraplegia

10 (1.4)

17 (1.4)

0.98

Any prior malignancy

183 (25.5)

319 (26.0)

0.83

Metastatic solid tumor

29 (4.0)

56 (4.6)

0.59

Illicit drug abuse

9 (1.3)

15 (1.2)

0.95

Nursing home residence

10 (1.4)

7 (0.6)

0.06

Vasopressor use

50 (7.0)

499 (40.6)

<0.01

Cardiovascular drug count 90 days prior, mean (SD)

2.0 (1.6)

1.9 (1.6)

0.06

Diabetes drug count 90 days prior, mean (SD)

0.4 (0.8)

0.4 (0.7)

0.04

Inhaled corticosteroids drug count 90 days prior mean (SD)

0.75 (1.0)

0.62 (0.98)

0.01

Pulmonary drug count 90 days prior mean (SD)

2.4 (2.2)

2.0 (2.2)

<0.01

Number of primary care clinical visits 1 year prior, mean (SD)

5.0 (3.8)

5.0 (4.4)

0.88

Number of emergency department clinic visits 1 year prior, mean (SD)

1.3 (3.6)

1.4 (2.8)

0.52

Reason for immunosuppression

 

 Taking immunosuppressive drugs

611 (85.2)

961 (78.2)

<0.01

 Leukemia/lymphoma/multiple myeloma

42 (5.9)

121 (9.9)

<0.01

 Taking oral corticosteroids

362 (50.5)

649 (52.8)

0.32

 AIDS

3 (0.4)

3 (0.2)

0.68