A Risk Prediction Model for Prolonged Length of Stay in Patients with Acute Exacerbations of Chronic Obstructive Pulmonary Disease: A Retrospective Study of 225 Patients in a Single Center in Kunming, China

09 February 2022: Clinical Research

Lifen Yang ^1ABCDEFG* , Meihua Li ^1BCD , Jingkui Shu ^2BCD , Yanxia Yang ^1BCD , Qian Huang ^3BCD

DOI: 10.12659/MSM.934392

Med Sci Monit 2022; 28:e934392

Table 4 Variables associated with the risk of prolonged LOS in models 1, 2, and 3.

Variable	β	S.E	Wald	P	OR	Lower	Upper
Model 1
Constant	35.508	17.811	3.974	0.046
Age (day 1)	0.038	0.019	4.169	0.041	1.039	1.002	1.078
mMRC scale (day 1)	1.028	0.321	10.261	0.001	2.796	1.490	5.245
pH (day 1)	−5.558	2.418	5.282	0.022	0.004	0.001	0.441
HCO (day 1)	0.074	0.035	4.585	0.032	1.077	1.006	1.153
Model 2
Constant	−1.347	0.547	6.059	0.014
COPD-exacerbated autumn (day 1)	0.869	0.353	6.072	0.014	2.384	1.195	4.757
mMRC scale (day 1)	0.873	0.322	7.349	0.007	2.394	1.274	4.501
Corticosteroids use during hospitalization (day 4)	1.101	0.342	10.372	0.001	3.007	1.539	5.877
Model 3
Long-term home oxygen therapy (day 1)	0.874	0.308	8.041	0.005	2.396	1.310	4.383
Charlson index (day 1)	0.436	0.177	6.079	0.014	1.546	1.093	2.187
ΔPLT	0.006	0.003	4.489	0.034	1.006	1.000	1.012
ΔPCT	0.751	0.297	6.405	0.011	2.119	1.185	3.790
LOS – length of stay; mMRC – modified Medical Research Council; PLT – platelet; PCT – procalcitonin; S.E – standard error; OR – odds ratio; Δ – changes between the fourth and first day of hospitalization.