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Table 1 Baseline characteristics for present study cohort (n = 182). Comparing those with complete chest radiograph resolution (n = 126) versus those with persistent abnormality (n = 56). Values presented as median (Interquartile range) for continuous variables and percentage (n) for categorical variables. CXR-chest radiograph, Level 2 - High Dependency Facility, Level 3-Intensive Care Facility, IMV- Invasive mechanical ventilation, CPAP-continuous positive pressure ventilation, NIV – non-invasive ventilation, BAME -Black, Asian and Minority Ethnic. BMI body mass index (kg/m2), LDH- serum lactate dehydrogenase ^data available for baseline LDH n = 165 and follow-up LDH n = 172. *p < 0.05 **p < 0.01. Comparison of data for complete resolution versus persistent CXR abnormality assessed using the Mann-Whitney U Test or Chi Squared test as appropriate

From: Predicting the risk of chest radiograph abnormality 12-weeks post hospitalisation with SARS CoV-2 PCR confirmed COVID-19

Variable

Whole Group (n = 182)

Complete Resolution (n = 126)

Persistent CXR Abnormality (n = 56)

p value

Sex (male)

54% (n = 98)

51% (n = 64)

61% (n = 34)

0.235

Age (years)

58.0 (47–67)

55.0 (45–64)

64.0 (54–74)

< 0.001**

Hospital length of Stay (days)

9.0 (8–13)

7.0 (4–12)

10.5 (7–16)

0.005**

Follow-up CXR interval (days)

80.0 (74–86)

81.0 (75–86)

79.0 (72–85)

0.144

Level 2 or 3 Care

31% (n = 57)

25% (n = 31)

46% (n = 26)

0.003**

IMV

8% (n = 15)

8% (n = 10)

9% (n = 5)

0.822

CPAP/NIV

24% (n = 43)

16% (n = 20)

41% (n = 23)

< 0.001**

Oxygen or higher resp. support

92% (n = 167)

90% (n = 114)

95% (n = 53)

0.345

BAME

27% (n = 47)

29% (n = 35)

23% (n = 12)

0.407

Obesity (BMI > 30 kg/m 2 )

40% (n = 72)

42% (n = 53)

34% (n = 19)

0.300

Ever smoker

44% (n = 80)

39% (n = 49)

55% (n = 31)

0.038*

Hypertension

23% (n = 42)

25% (n = 31)

20% (n = 11)

0.464

Diabetes Melitus (all types)

20% (n = 37)

22% (n = 28)

16% (n = 9)

0.341

Baseline LDH U/L^

643 (506–854)

626 (501–830)

667 (535–959)

0.240

Follow-up LDH U/L^

387 (348–449)

379 (329–443)

407 (367–456)

0.032*