Table 2 Measures of diagnostic accuracy, comparison of MUAC cutoffs for every 0.5 cm
MUAC cutoff (cm) | Sensitivity (SENS) | Specificity (SPEC) | Positive Predictive Value (PPV) | Negative Predictive Value (NPV) | Youden’s Index (YI) |
|---|---|---|---|---|---|
< 20 | 3.6 | 100 | 1 | 0.91 | 0.04 |
< 20.5 | 7.1 | 100 | 1 | 0.92 | 0.07 |
< 21 | 17.9 | 100 | 0.86 | 0.93 | 0.18 |
< 21.5 | 21.4 | 99.6 | 0.85 | 0.94 | 0.21 |
< 22 | 39.3 | 99.3 | 0.54 | 0.95 | 0.39 |
< 22.5 | 46.4 | 96.0 | 0.53 | 0.96 | 0.42 |
< 23 | 64.3 | 94.2 | 0.47 | 0.97 | 0.58 |
< 23.5 | 71.4 | 91.6 | 0.39 | 0.98 | 0.63 |
< 24 | 85.7 | 86.5 | 0.35 | 0.99 | 0.72 |
< 24.5 | 92.9 | 82.5 | 0.30 | 0.99 | 0.75 |
< 25 | 96.4 | 77.4 | 0.26 | 0.99 | 0.74 |
< 25.5 | 96.4 | 71.9 | 0.23 | 1 | 0.68 |
< 26 | 100 | 65.3 | 0.19 | 1 | 0.68 |
< 26.5 | 100 | 57.3 | 0.17 | 1 | 0.57 |
< 27 | 100 | 51.5 | 0.16 | 1 | 0.51 |
< 27.5 | 100 | 46.4 | 0.14 | 1 | 0.46 |
< 28 | 100 | 39.1 | 0.13 | 1 | 0.39 |
< 28.5 | 100 | 35.4 | 0.12 | 1 | 0.35 |
< 29 | 100 | 28.8 | 0.12 | 1 | 0.29 |
< 29.5 | 100 | 26.3 | 0.11 | 1 | 0.26 |
< 30 | 100 | 22.6 | 0.11 | 1 | 0.23 |
< 30.5 | 100 | 19.3 | 0.10 | 1 | 0.19 |
< 31 | 100 | 15.7 | 0.10 | 1 | 0.16 |
< 31.5 | 100 | 11.7 | 0.10 | 1 | 0.12 |
< 32 | 100 | 9.1 | 0.10 | 1 | 0.09 |
< 33.5 | 100 | 7.7 | 0.10 | 1 | 0.08 |
< 34 | 100 | 5.5 | 0.10 | 1 | 0.05 |
< 34.5 | 100 | 4.4 | 0.09 | 1 | 0.04 |
< 35 | 100 | 2.9 | 0.09 | 1 | 0.03 |
< 35.5 | 100 | 2.2 | 0.09 | 1 | 0.02 |
< 36 | 100 | 1.8 | 0.09 | 1 | 0.02 |
< 36.5 | 100 | 1.1 | 0.09 | 1 | 0.01 |
< 37 | 100 | 0.7 | 0.09 | 1 | 0.01 |
> 37.5 | 100 | 0.00 | 0.09 | 1 | 0 |