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Table 3 Measures of agreement between two data sources (card- vs recall-based)

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

  BCG OPV DPT Measles Measles
(9+ months)
  (n = 2460) (n = 2460) (n = 2460) (n = 2460) (n = 644)
Agreement/concordance (%) 98.0 97.7 97.7 94.2 94.4
Parental recall bias (%) 2.0 2.3 2.3 5.8 5.6
 Over-reporting (%) 1.3 1.3 1.9 3.2 3.0
 Under-reporting (%) 0.7 1.0 0.4 2.6 2.6
Sensitivity (%) 99.3 98.9 99.6 93.4 95.8
Specificity (%) 22.5 20.0 16.1 94.6 92.1
Kappa statistic (unadjusted) 0.26 0.21 0.23 0.88 0.88
Kappa statistic –PABAK 0.96 0.95 0.95 0.88 0.89
  1. Notes: Prevalence and Bias Adjusted Kappa (PABAK) = (2P O -1), where P O indicates proportion of observed agreement