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. Author manuscript; available in PMC: 2013 Apr 2.
Published in final edited form as: Paediatr Perinat Epidemiol. 2011 Aug 10;25(6):540–548. doi: 10.1111/j.1365-3016.2011.01226.x

Table 3.

Sensitivities, specificities, positive predictive values and negative predictive values for maternal telephone interview vs. medical record data among case and noncase mothers

Characteristic Case mothers (n = 234)
Noncase mothers (n = 215)
Se [95% CI] Sp [95% CI] PPV [95% CI] NPV [95% CI] Se [95% CI] Sp [95% CI] PPV [95% CI] NPV [95% CI]
Pregnancy complicationa
 Gestational diabetes 0.75 [0.19, 0.99] 0.98 [0.95, 0.99] 0.43 [0.10, 0.82] 0.99 [0.97, 1.00] 0.83 [0.36, 1.00] 0.97 [0.93, 0.99] 0.45 [0.17, 0.77] 0.99 [0.97, 1.00]
 Hypertension 0.46 [0.28, 0.66] 0.92 [0.87, 0.96] 0.46 [0.28, 0.66] 0.92 [0.87, 0.96] 0.90 [0.70, 0.99] 0.92 [0.87, 0.95] 0.56 [0.38, 0.73] 0.99 [0.96, 1.00]
 Protein or albumin in urine 0.12 [0.08, 0.18] 0.95 [0.85, 0.99] 0.86 [0.65, 0.97] 0.28 [0.22, 0.35] 0.11 [0.07, 0.17] 0.98 [0.90, 1.00] 0.94 [0.73, 1.00] 0.27 [0.21, 0.34]
 Peripheral oedema 0.86 [0.76, 0.93] 0.47 [0.37, 0.58] 0.58 [0.48, 0.67] 0.80 [0.67, 0.90] 0.89 [0.79, 0.96] 0.54 [0.43, 0.64] 0.56 [0.46, 0.66] 0.88 [0.77, 0.95]
 Toxaemia or pre-eclampsia 0.47 [0.21, 0.73] 0.97 [0.94, 0.99] 0.58 [0.28, 0.85] 0.96 [0.92, 0.98] 0.57 [0.18, 0.90] 0.98 [0.95, 0.99] 0.50 [0.16, 0.84] 0.98 [0.96, 1.00]
Medical procedure
 Ultrasound 1.00 [0.98, 1.00] 1.00
–		 1.00 [0.98, 1.00] 1.00
–		 0.99 [0.97, 1.00] 1.00 [0.29, 1.00] 1.00 [0.98, 1.00] 0.75 [0.19, 0.99]
 Caesarean section 1.00 [0.94, 1.00] 1.00 [0.98, 1.00] 1.00 [0.94, 1.00] 1.00 [0.98, 1.00] 1.00 [0.92, 1.00] 1.00 [0.98, 1.00] 1.00 [0.92, 1.00] 1.00 [0.98, 1.00]
 Infant received phototherapy 1.00
–		 1.00 [0.16, 1.00] 1.00
–		 1.00 [0.16, 1.00] 1.00 [0.16, 1.00] 0
–		 1.00 [0.16, 1.00] 0
–
 Infant received blood products 0
–		 0.97 [0.88, 1.00] 0 [0, 0.84] 1.00 [0.94, 1.00] 0
–		 1.00 [0.97, 1.00] 0
–		 0.99 [0.96, 1.00]
 Infant received supplemental oxygen 0.25 [0.11, 0.43] 0.98 [0.87, 1.00] 0.89 [0.52, 1.00] 0.62 [0.49, 0.74] 0.24 [0.13, 0.37] 0.97 [0.90, 1.00] 0.86 [0.57, 0.98] 0.63 [0.53, 0.72]
 Infant moved for special treatment 0.79 [0.49, 0.95] 0.94 [0.85, 0.98] 0.73 [0.45, 0.92] 0.95 [0.87, 0.99] 0.81 [0.54, 0.96] 0.95 [0.89, 0.98] 0.65 [0.41, 0.85] 0.98 [0.93, 1.00]

Se, Sensitivity; Sp, Specificity; PPV, positive predictive value; NPV, negative predictive value; 95% CI, exact 95% confidence interval.

a

Mentioned in medical record, not based on diagnostic criteria.