Women receive more trials of noninvasive ventilation for acute respiratory failure than men: a nationwide population-based study

Table 5 Balances between men and women after one-to-one matching by the propensity score*

	ARF patients		ARF patients with COPD		ARF patients with CHF		Other ARF patients
	Women ( n = 2390)	Men ( n = 2390)	Women ( n = 126)	Men ( n = 126)	Women ( n = 217)	Men ( n = 217)	Women ( n = 2037)	Men ( n = 2037)
Age, years	70 (55-80)	71 (56-79)	78 (72-85)	77 (70-83)	76 (70-82)	77 (68-82)	69 (53-79)	69 (53-78)
Surgical condition	52.9	53.6	22.2	21.4	28.6	33.2	57.2	57.8
Comorbidity
Charlson Comorbid Index	1 (0-2)	1 (0-2)	2 (1-2)	1 (1-2)	2 (1-3)	2 (1-3)	1 (0-2)	1 (0-2)
COPD	5.4	5.2	-	-	11.5	12.9	-	-
Congestive heart failure	10.5	10.0	19.0	20.6	-	-	-	-
Cerebrovascular disease	18.2	18.9	13.5	11.9	7.8	5.5	19.6	21.1
Cancer	12.9	12.9	4.0	4.8	4.1	5.1	14.5	14.5
Principal diagnoses
Respiratory	20.9	20.3	65.1	65.9	32.3	30.9	17.4	18.0
Neurological	1.7	1.6	8.7	10.3	0	0	1.8	1.9
Cardiovascular	24.7	24.5	12.7	10.3	48.8	49.3	22.4	22.4
Digestive	8.5	8.6	4.8	5.6	4.1	3.2	9.1	9.3
Genitourinary	2.8	2.5	4.0	3.2	2.3	3.2	2.8	2.2
Metabolic/endocrine	1.9	1.7	0	0	0	0	2.2.	1.7
Injury/poisoning	15.2	15.6	4.0	4.0	2.3	3.2	17.4	17.4
Others	24.4	25.3	8.7	10.3	10.1	10.1	26.8	27.0
No. of organ dysfunction	1(1-1)	1(1-1)	1(1-1)	1(1-1)	1(1-1)	1(1-1)	1(0-1)	1(0-1)
Intensive care unit admission	88.7	88.7	74.6	73.8	90.8	89.4	89.4	89.7
Hospital level
Medical center	43.4	43.5	32.5	29.4	31.3	35.5	45.4	45.4
Regional hospital	41.2	41.1	42.9	47.6	47.0	47.0	40.4	40.9
District hospital	15.4	15.4	24.6	23.0	21.7	17.5	14.3	13.7

* Categorical variables are tested by the McNemar's test; continuous variables by the Wilcoxon Signed-rank test. All P values > 0.05.
Values are expressed as median (interquartile range) or percentages.
ARF, acute respiratory failure; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; Other ARF, diseases other than COPD or CHF.

ISSN: 1364-8535