Table 5.

Logistic regression analysis of VAP risk factors in elderly patients with MV

Risk factors	B	SE	Wald	p	OR	95%CI
COPD	0.423	0.211	4.015	0.045	1.526	1.009–2.308
ICU admission	0.666	0.199	11.239	0.001	1.947	1.319–2.875
Mechanical ventilation methods
Tracheal intubation			7.584	0.023
Tracheostomy	−0.501	0.222	5.123	0.024	0.606	0.392–0.935
Tracheotomy after tracheal intubation	0.122	0.321	0.145	0.703	1.130	0.602–2.122
Number of central venous catheter	0.593	0.234	6.424	0.011	1.809	1.144–2.860
Duration of indwelling urinary catheters	0.590	0.206	8.226	0.004	1.805	1.206–2.701
Number of antibiotics administered	1.599	0.525	9.263	0.002	4.947	1.767–13.852
Before mechanical ventilation
Use of corticosteroids	0.481	0.195	6.075	0.014	1.618	1.104–2.372
Constant	−6.468	1.100	34.557	<0.001	0.002

Abbreviations: MV, mechanical ventilation; ICU, intensive care unit; VAP, ventilator-associated pneumonia.