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Table 6 Area under the receiver operating characteristic curve (AUROC) analysis table for risk of persistent chest radiograph abnormality using the combined risk prediction score

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

Score Remaining (n) With score (n) Persistent abnormality (n) Resolution (n) Sensitivity 1-Specificity
0 66 13 0 13 1 1
1 53 11 3 8 1 0.698
2 42 18 4 14 0.87 0.512
3 24 18 11 7 0.697 0.186
4 6 6 5 1 0.217 0.023
5 0 0 0 0 0.000 0.000
  1. 0–5 point scale with 1 point each for length of stay ≥ 15 days, LDH ≥ 750 U/L, positive current or ex-smoking status, admission to a level 2 (high dependency) or 3 (intensive care) facility and, positive past medical history of obesity [Body mass index (BMI) > 30 kg/m2]