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Table 2 Results and comparison of the testing on 1399 clinical samples by the two kits

From: Comparison of the performance of two real-time fluorescent quantitative PCR kits for the detection of SARS-CoV-2 nucleic acid: a study based on large real clinical samples

n

Maccura kit

All

Positive

Negative

Sansure kit

Positive

1072

46

1118

Negative

120

161

281

All

 

1192

207

1399

Sensitivity = 1072 / (1072 + 46) × 100% = 95.89%

Specificity = 161 / (120 + 161) × 100% = 57.30%

Positive predictive value = 1072 / (1072 + 120) × 100% = 89.93%

Negative predictive value = 161 / (46 + 161) × 100% = 77.78%

Accuracy = (1072 + 161) / (1072 + 46 + 120 + 161) × 100% = 88.13%