Table 3.

Multivariable logistic regression analysis with generalised estimating equations accounting for clustering within matched pairs for all-cause in-hospital mortality

		Adjusted odds ratio	95% confidence interval	p-value
MRSA pneumonia		1.94	1.72–2.18	< 0.001
Sex (female)		0.59	0.52–0.67	< 0.001
Age (year)		1.01	1.00–1.01	0.001
Body mass index (kg/m2)	≤ 18.5	1.58	1.40–1.78	< 0.001
	18.5–24.9	Reference
	25–29.9	0.70	0.54–0.91	0.007
	≥ 30	0.65	0.33–1.31	0.231
ADL score (Barthel Index)	85–100	Reference
	60–80	1.05	0.80–1.37	0.724
	0–55	1.84	1.54–2.20	< 0.001
Hugh-Jones grade on admission	I	Reference
	II	1.09	0.72–1.63	0.692
	III	1.59	1.07–2.38	0.023
	IV	2.22	1.57–3.14	< 0.001
	V	5.57	3.89–7.97	< 0.001
A-DROP score	0	Reference
	1	1.46	0.94–2.28	0.093
	2	2.06	1.32–3.21	0.002
	3	3.05	1.94–4.78	< 0.001
	4	5.36	3.35–8.57	< 0.001
	5	11.8	7.13–19.6	< 0.001
CRP ≥ 20 mg/mL or infiltration covering at least two-thirds of one lung on chest radiography		1.38	1.17–1.64	< 0.001
Mechanical ventilation		1.84	1.48–2.29	< 0.001
at admission
ICU admission		0.56	0.38–0.82	0.003
Haemodialysis		1.40	0.99–1.97	0.060
Emergency transport		1.01	0.91–1.13	0.837
COPD		0.77	0.65–0.90	0.002
Interstitial lung disease		1.84	1.41–2.40	< 0.001
Aspiration pneumonia		1.42	1.08–1.87	0.013
Pseudomonas aeruginosa pneumonia		0.95	0.68–1.32	0.743

MRSA, methicillin-resistant Staphylococcus aureus; ADL, activities of daily living; A-DROP, Age, Dehydration, Respiratory Failure, Orientation Disturbance and Blood Pressure; CRP, C-reactive protein; ICU, intensive care unit; COPD, chronic obstructive pulmonary disease