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Table 2 Performance of the HIV algorithm compared to HIV test results

From: Paediatric HIV management at primary care level: an evaluation of the integrated management of childhood illness (IMCI) guidelines for HIV

n = 1064a Classified as suspected symptomatic HIV Identified as HIV exposed Any HIV classification (either HIV exposed OR suspected symptomatic HIV)
# 171 201 313
# confirmed HIV positive 54 43 69
Sensitivity
(95% CI)
71.1%
(59.5% - 80.9%)
56.6%
(44.7% - 67.9%)
90.8%
(81.9% - 96.2%)
Specificity
(95% CI)
88.1%
(85.9% - 90.1%)
84.0%
(81.6% - 86.2%)
75.3%
(72.5% - 77.9%)
PPV
(95% CI)
31.6%
(24.7% - 39.15)
21.4%
(15.9% - 27.7%)
22.0%
(17.6% - 27.1%)
NPV
(95% CI)
97.5%
(96.3% - 98.4%)
96.2%
(94.7% - 97.4%)
99.1%
(98.1% - 99.6%)
Likelihood ratio +
(95% CI)
5.99
(4.79 - 7.48)
3.54
(2.77 - 4.51)
3.67
(3.22 - 4.18)
  1. a comprises all children where an HIV test result is known
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