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

Table 2 Cox-univariate analysis for risk of persistent chest radiograph (CXR) abnormality

Variable	Univariate analysis: Hazard Ratio (95% confidence interval)	p value
Age (years)	1.029 (1.001–1.057)	0.045*
Sex (male)	2.325 (0.658–2.702)	0.462
Length of Stay (days)	1.040 (1.022–1.059)	0.001**
Level 2 or 3 admission	1.847 (0.847–4.025)	0.123⁺
Oxygen or higher respiratory support	1.420 (0.495–4.077)	0.514
Current or ex-smoker	2.515 (1.225–5.165)	0.012*
BAME	0.675 (0.318–1.434)	0.307
Asthma	1.223 (0.503–2.977)	0.657
Hypertension	1.218 (0.603–2.460)	0.582
Obesity (BMI > 30 kg/m²)	1.762 (0.847–3.665)	0.129⁺
Diabetes Melitus	1.135 (0.488–2.639)	0.769

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