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Table 7 Comparison of CTSS with clinical severity and SpO2 levels at the time of scan and on follow-up

From: COVITALE 2020 from eastern Indian population: imageologists perspective, a learning curve

CTSI categories No. of patients (out of 1000) Clinical grade Spo2 grading No. of patients % Patients who developed hypoxemia on follow up Percentage of patients who developed hypoxemia on follow up
0–7 512 Asymp &Mild  > 95 371 72.46 42 11.32
Moderate 90–94 112 21.87 –*
Severe  < 90 29 5.66 –*
8–15 295 Asymp &Mild  > 95 63 21.35 10 15.87
Moderate 90–94 189 64.06 –*
Severe  < 90 43 14.57 –*
16–25 193 Asymp &Mild  > 95 14 7.21 2 14.28
Moderate 90–94 46 23.71 –*
Severe  < 90 133 69 –*
  1. *–Not included in follow-up study as these patients were already hypoxemic at the time of admission