Journal of Nutrition and Metabolism / 2021 / Article / Tab 4 / Research Article
Diagnostic Concordance between Random Upper Arm Circumference and Mid Upper Arm Circumference Measurements among Children Aged 6–59 Months in South Ethiopia: A Community-Based Cross-Sectional Study Table 4 Validity tests on RUAC using MUAC measurement as the golden standard in 6–59-month-old children from Lanfro District, SNNPR, Southern Ethiopia, 2016 (n = 819).
Indicators Sensitivity % (95% CI) Specificity % (95% CI) Positive likelihood ratio (95% CI) Negative likelihood ratio (95% CI) Youden index PPV % (95% CI) NPV % (95% CI) Nutritional status SAM 27.8 (12.5–50.9) 99 (99.3–99.9) 222.5 (27–1808.9) 0.72 (0.54–0.96) 0.26 83 (43.6–96.9) 98.4 (97.3–99) MAM 32 (23.1–42.7) 97.5 (96.2–98.4) 13 (7.6–22.8) 0.69 (0.6–0.8) 0.29 60 (45.4–72.9) 92 (90.594.2) GAM 44 (34.8–53.8) 99 (98.1–99.3) 52.7 (23.3–120.4) 0.56 (0.47–0.6) 0.43 88 (76.6–94.5) 92.5 (90.5–94.2) Age in months 6–11 42.8 (26.5–60.9) 99 (95.4–99.8) 50.6 (6.5–372.9) 0.57 (0.42–0.79) 0.42 92 (66.7–98.6) 87.9 (87.4–92.4) 12–23 48.8 (34.6–63.2) 97.8 (94.7–99.2) 23 (8.5–64.8) 0.52 (0.39–0.7) 0.46 84 (65.4–93.6) 89.5 (84.6–92.9) 24–35 50 (29–70.9) 99.3 (96.2–99.9) 73 (9.1–543.1) 0.5 (0.32–0.79) 0.49 90 (59.6–98.2) 93.5 (88.5–96.5) 36–47 12.5 (2.2–47.1) 99.2 (96.2–99.9) 18 (1.3–265.6) 0.88 (0.67–1.1) 0.12 50 (9.4–90.5) 95 (91.4–98.3) 48–59 40 (11.8–76.9) 99 (95–99.8) 47 (5.1–437.8) 0.6 (0.96.–1.22) 0.39 66.7 (20.7–93.8) 97 (92.7–99.2) Combined 44 (34.8–53.8) 99 (98–99) 52.7 (23.3–120.4) 0.56 (0.47–0.6) 0.43 88 (76.6–94.5) 92.5 (90.5–94.2) Sex Female 43.8 (31.8–56.6) 99.7 (98.3–99.9) 144 (19.9–104.3) 0.56 (0.45–0.7) 0.43 96 (81.1–99.3) 91 (87.7–93.6) Male 44 (30.8–58.8) 98.7 (97–99.4) 34 (13.4–87.4) 0.56 (0.43–0.73) 0.43 80 (60.8–91.4) 93.8 (91.1–95.8) Combined 44 (34.8–53.8) 99 (98.1–99.1) 52.7 (23.1–120.4) 0.56 (0.47–0.6) 0.43 88 (76.6–94.5) 92.5 (90.5–94.2)
Youden index = (sensitivity + specificity) – 1. PPV: positive predictive value; NPV: negative predictive value.