Table 3. Logistic regression analysis of independent factors associated with survival at 90 days post hospital admission for AECOPD.

Variables	OR	95% CI for OR		P value
		Lower	Upper
Age	1.11	1.03	1.20	0.011
Haemoglobin	0.96	0.93	1.00	0.052
Neutrophil	1.00	0.99	1.01	0.13
NLR	0.95	0.84	1.08	0.46
PLR	1.15	1.02	1.30	0.03
Urea	1.03	0.97	1.09	0.36

AECOPD, acute exacerbation of COPD; CI, confidence interval; OR, odds ratio; NLR, neutrophil lymphocyte ratio; PLR, platelet-to-lymphocyte ratio.