Table 3.

Multiple logistic regression for the various independent factors on successful spontaneous breathing trial

				OR	95% CI
Variables	B	SE	Sig	(ExpB)	Lower	Upper
Age	–0.027	0.023	0.249	0.974	0.930	1.019
Sex	–0.013	1.058	0.990	0.124	0.124	7.851
Patient	1.094	1.036	0.291	2.987	0.392	22.77
HTN	1.421	1.159	0.137	1.852	0.857	2.681
IHD	–1.093	0.897	0.223	0.335	0.058	1.943
DM	–1.304	0.847	0.124	0.271	0.052	1.427
COPD	–2.387	1.032	0.021	0.092	0.012	0.694
Inotrope	2.120	1.121	0.059	2.329	0.925	4.014
LUS0	–0.209	0.140	0.136	0.358	0.126	0.841
LUS30	–0.380	0.145	0.009	0.684	0.515	0.908
SOFA	–0.152	0.101	0.032	0.859	0.704	1.047
Duration MV	–0.034	0.124	0.014	0.967	0.758	1.232
SBP	0.047	0.029	0.099	1.048	0.991	1.109
PO2	0.205	0.110	0.669	2.682	1.095	5.627
RSBI	–0.018	0.016	0.259	0.983	0.953	1.013

COPD, chronic obstructive pulmonary disease, IHD, ischemic heart disease; LUS, lung ultrasound score; MV, mechanical ventilation; PO₂, arterial partial pressure of oxygen; RSBI, rapid shallow breathing index; SOFA, sequential organ failure assessment; SBP, systolic blood pressure