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Table 2 Validation results for the InterVA model and PCVA against the HCOD in diagnosing the cause of death for the five most common causes of death among 145 adults

From: Validating physician-certified verbal autopsy and probabilistic modeling (InterVA) approaches to verbal autopsy interpretation using hospital causes of adult deaths

Causes of death

Sensitivity (%)

(95% CI)

PPV (%)

(95% CI)

Specificity (%)

(95% CI)

NPV (%)

(95% CI)

 

InterVA

   

HIV/AIDS-related death

70 (5-84)

61 (43-76)

87 (79-92)

91 (84-92)

Cardiovascular

52 (34-69)

57 (37-75)

88 (81-94)

86 (78-92)

Tuberculosis (pulmonary)

83 (36-100)

28 (10-54)

91 (85-95)

99 (96-100)

Meningitis

43 (10-82)

33 (8-70)

96 (91-99)

97 (93-99)

Diabetes

63 (25-92)

83 (36-100)

99 (96-100)

98 (94-100)

 

PCVA

   

HIV/AIDS-related death

88 (72-97)

80 (64-92)

94 (88-98)

96 (91-99)

Cardiovascular

70 (51-84)

82 (63-94)

96 (90-99)

91 (85-95)

Tuberculosis (pulmonary)

100 (54-100)

55 (23-83)

96 (92-99)

100 (97-100)

Meningitis

43 (10-82)

60 (15-95)

99 (95-100)

97 (93-99)

Diabetes

100 (63-100)

57 (29-82)

96 (91-99)

100 (97-100)

  1. PCVA: physician-certified verbal autopsy; InterVA model: probabilistic model; NPV: negative predictive value; PPV: positive predictive value; CI: confidence interval
  2. PPV is the number of positives correctly diagnosed through the InterVA model/PCVA (true positives) divided by number of positives diagnosed in hospital (as the gold standard).
  3. NPV is the number of negatives correctly diagnosed through the InterVA model/PCVA (true negatives) divided by number of negatives diagnosed in hospital (as the gold standard).