Table 4.

Univariable and multivariable logistic regression analyses of factors associated with hospitalisation among all study population (n=725)

	Crude OR (95% CI)	P value	Adjusted OR (95% CI)	P value
RSV infection	2.751 (1.721 to 4.398)	<0.001	2.035 (1.167 to 3.546)	0.012
Male gender	0.929 (0.676 to 1.277)	0.650
Age (years)	1.032 (1.023 to 1.042)	<0.001	1.021 (1.007 to 1.035)	0.003
Obesity	1.419 (0.892 to 2.257)	0.140
Underweight	1.233 (0.475 to 3.200)	0.667
Smoking	1.995 (1.189 to 3.346)	0.009	2.621 (1.502 to 4.573)	0.001
Number of underlying conditions	1.611 (1.418 to 1.830)	<0.001	1.433 (1.210 to 1.696)	<0.001
Supported housing	1.546 (1.069 to 2.238)	0.021
Hypertension	2.864 (2.047 to 4.007)	<0.001
Ischaemic heart disease	2.445 (1.641 to 3.644)	<0.001
Heart failure	3.342 (1.738 to 6.425)	<0.001
Cerebrovascular disease	2.502 (1.449 to 4.317)	0.001
COPD	3.190 (1.609 to 6.325)	0.001
Asthma	1.323 (0.901 to 1.942)	0.153
Solid malignancy	1.891 (0.960 to 3.725)	0.065
Haematological malignancy	0.806 (0.337 to 1.929)	0.628
Diabetes	2.310 (1.481 to 3.602)	<0.001
Chronic kidney disease	1.434 (0.754 to 2.729)	0.272
Dementia	1.205 (0.739 to 1.964)	0.455
Immunosuppressive medication	0.814 (0.492 to 1.346)	0.422

The HL confirmed the goodness of fit for the multivariable model (p=0.138). In categorical variables, men were compared with women, obese (BMI ≥30 kg/m²) and underweight (BMI <18.5 kg/m²) patients with patients with BMI greater than or equal to 18.5–29.9 kg/m², smokers with non-smokers, patients living in supported housing with patients living independently. The patients with certain underlying condition were compared with those without the underlying condition in question.

BMI, body mass index; COPD, chronic obstructive pulmonary disease; HL, Hosmer-Lemeshow; RSV, respiratory syncytial virus.