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

Table 2 Distributions of different types of mechanical ventilation in patients with acute respiratory failure

Variables	No	INV-only, %	NIV-only, %	NIV/INV, %	P Value
Total	6,621	84.6	6.8	8.6
Sex					< 0.001
Men	4,177	85.9	5.7	8.4
Women	2,444	82.4	8.6	9.0
Age					< 0.001
< 65 years	2,917	88.9	4.8	6.3
≥ 65 years	3,704	81.3	8.3	10.4
Surgical condition					< 0.001
Yes	3,594	87.5	3.5	9.0
No	3,027	81.2	10.6	8.1
Charlson Comorbidity index					< 0.001
0	2,158	88.3	4.4	7.3
1	2,076	83.9	7.0	9.1
2	1,258	81.4	9.6	9.0
3+	1,129	82.4	7.7	9.9
Comorbid conditions
COPD					< 0.001
Yes	533	66.2	16.7	17.1
No	6088	86.2	5.9	7.9
Congestive heart failure					< 0.001
Yes	573	74.9	12.2	12.9
No	6,048	85.5	6.3	8.2
Cerebrovascular disease					< 0.001
Yes	1,118	89.6	3.2	7.2
No	5,503	83.6	7.5	8.9
Cancer					0.001
Yes	946	82.2	9.5	8.2
No	5,675	85.0	6.3	8.7
Principal diagnoses					< 0.001
Respiratory	1,395	76.3	12.4	11.3
Non-respiratory	5,220	86.9	5.2	7.9
No. of organ dysfunction					0.011
1	5,173	83.8	7.5	8.7
2	1,198	86.9	4.5	8.6
3+	250	90.4	2.4	7.2
ICU admission					< 0.001
Yes	5,882	87.5	3.1	9.5
No	739	61.8	36.3	1.9
Hospital level					< 0.001
Medical center	2,861	81.0	7.7	11.4
Regional hospital	2,802	86.3	6.2	7.5
District hospital	958	90.6	5.6	3.8

COPD, chronic obstructive pulmonary disease; INV-only, use of invasive ventilation (INV) as the only ventilator treatment; NIV-only, use of noninvasive ventilation (NIV) as the only ventilator treatment; NIV/INV, use of both NIV and INV before or after each other.

ISSN: 1364-8535