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Table 5 Correlation between CT severity index and PCR results

From: Spectrum of CT appearance and CT severity index of COVID-19 pulmonary infection in correlation with age, sex, and PCR test: an Iraqi experience

CT severity index No. +VE PCR −ve PCR p value
No. No.
Score 1 (< 5%) 6 3 3 0.001917
Score 2 (5–25%) 91 58 33
Score 3 (26–50%) 64 52 12
Score 4 (51–75%) 9 8 1
Score 5 (> 75%) 2 2 0