Predictive value of diaphragm ultrasound for mechanical ventilation outcome in patients with acute exacerbation of chronic obstructive pulmonary disease

Table 2 Multivariate logistic regression analysis of predictive indicators for non-invasive ventilation outcome in acute exacerbation of chronic obstructive pulmonary disease patients

Index	β	SE	Wald	P value	OR	95%CI
Hospital stays	0.221	0.156	1.999	0.157	1.247	0.918-1.694
pH	5.367	2.731	3.861	0.049	0.005	0.000-0.986
PaCO2	0.845	0.350	5.841	0.016	0.430	0.216-0.852
DTF	0.562	0.219	6.613	0.010	0.570	0.371-0.875
DE	0.190	0.219	0.758	0.384	1.210	0.788-1.857
E-T index	2.401	2.020	1.413	0.234	0.091	0.002-4.747

OR: Odds ratio; CI: Confidence interval; pH: Potential of hydrogen; PaCO2: Partial pressure of carbon dioxide; DTF: Diaphragm thickening fraction; DE: Diaphragm activity; E-T: Diaphragm movement time.