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Table 1 Two-by-two table for calculating sensitivity and specificity

From: Validity of parental recalls to estimate vaccination coverage: evidence from Tanzania

Agreement of sources

 

Vaccination status (Card-based source)

 
 

YES

NO

 

Vaccination status (Recall-based source)

YES

True positives (TP)

False positives (FP)

TP + FP

NO

False negatives (FN)

True negatives (TN)

FN + TN

  

TP + FN

FP + TN

Total (N)