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

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

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
  1. 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
  2. *p < 0.05
  3. **p < 0.01
  4. +p < 0.2