Epidemiological and clinical characteristics of older adults with burns: a 15-year retrospective analysis of 2554 cases in Wuhan Institute of Burns

Table 5 Multivariate logistic regression analysis of risk factors of mortality (n = 2231)

	R	Crude		Adjusted for case mix		P value
	R	OR	95% CI	OR	95% CI	P value
Age	0.050*	1.038	1.009–1.067	1.019	0.969–1.072	0.464
TBSA group	0.243*	-	-	-	-	< 0.001
Small area = reference
Medium area	-	3.657	1.507–8.876	6.444	1.559–26.640	0.010
Large area	-	10.841	3.848–30.539	21.624	4.139–112.975	< 0.001
Extra-large area	-	97.040	42.309–222.570	161.336	34.590–752.507	< 0.001
Inhalation injury	0.367*	27.867	13.700–56.684	5.308	1.959–14.384	0.001
Pulmonary disease	0.097*	4.906	1.879–20.332	11.307	2.623–48.740	0.001
Alzheimer’s disease	0.152*	10.491	0.107–6.776	24.824	5.707–107.976	< 0.001

Total burn surface area (TBSA), small area (< 10%TBSA), medium area (10–29%TBSA), large area (30–49%TBSA), extra-large area (≥ 50%TBSA)
R Spearman contingency coefficient, OR Odds ratio, CI Confidence interval
^*means P value < 0.05. The ROC AUC value (with 95% CI) for the multivariable regression was 0.914 (0.855–0.974) (P < 0.001)

ISSN: 1471-2318