Skip to main content
Fig. 1 | BMC Infectious Diseases

Fig. 1

From: Clinic-based diabetes screening at the time of HIV testing and associations with poor clinical outcomes in South Africa: a cohort study

Fig. 1Fig. 1

Accuracy (A), number needed to screen (B), and percent of cases captured (C) using age (years) and body mass index as discrete screening criteria for hemoglobin A1c ≥ 6.5%. A Distance from the receiver operating characteristic curve to the no discrimination line is maximized for HbA1c ≥ 6.5% at age alone at 38.6 years (specificity: 77.1%, sensitivity: 62.5%, positive likelihood ratio: 2.72), BMI alone at 31.6 kg/m2 (specificity: 70.8%, sensitivity: 60.4%, positive likelihood ratio: 2.07). B Number need to screen to identify one instance of HbA1c ≥ 6.5%. The lower leftmost black square represents screening the entire population (NNS = 28.5) and the upper rightmost light grey square is the most restrictive screening algorithm represented (NNS = 12.7). C Proportion of participants with HbA1c ≥ 6.5% captured. The lower leftmost white square represents screening the entire population (100% captured) and upper rightmost black square is the most restrictive screening algorithm represented (43.8% captured)

Back to article page