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Table 2 Comparison of objectively scored risk score and perceived risk for categorizing risk of HIV acquisition

From: Perceived risk versus objectively measured risk of HIV acquisition: a cross-sectional study among HIV-negative individuals in Serodiscordant partnerships with clients attending an Urban Clinic in Uganda

  Objective Risk Score a 
HighLow
Perceived riskHigh339PPV
7.14%
Low8127NPV
94.10%
 Sensitivity
27.27%
Specificity
76.51%
 
  1. aObjective risk score is assumed to be the reference standard. Abbreviations: PPV Positive Predictive Value, NPV Negative predictive value. Area under ROC curve = 0.52; 95%CI (0.38, 0.66)