Risk factors for persistent abnormality on chest radiographs at 12-weeks post hospitalisation with PCR confirmed COVID-19

Table 3 Cox multivaraite analysis for risk of persistent CXR abnormality

Variable	Multivariate analysis Hazard Ratio (95% Confidence interval)	p value
Length of Stay (days)	1.060 (1.032–1.090)	< 0.001**
Age (years)	1.008 (0.970–1.047)	0.684
Current or ex-smoker	3.286 (1.352–7.982)	0.009**
Level 2 or 3 admission	0.825 (0.307–2.215)	0.702
Obesity (BMI > 30 kg/m²)	2.717 (1.144–6.454)	0.024*

Variables with p < 0.2 in univariate analysis were included in the multivariate composite analysis. Level 2—High Dependancy Facility, Level 3-Intensive Care Facility, BAME Black, Asian and Minority Ethnic, BMI body mass index kg/m²
*p < 0.05
**p < 0.01
⁺p < 0.2

ISSN: 1465-993X