Table 3.
Serial cut‐off values and validity indices of maternal Wt, Ht, and MUAC as an indicator of LBW
| Wt | Sensitivity | Specificity | PPV | NPV | Accuracy | AUC | P value |
|---|---|---|---|---|---|---|---|
| 50 | 21.6 | 91.7 | 36.5 | 84.1 | 79.0 | 0.57 | .005 |
| 55 | 62.5 | 59.9 | 25.7 | 87.8 | 60.4 | 0.64 | .001 |
| 56 | 67.0 | 56.2 | 25.3 | 88.5 | 58.1 | 0.64 | .001 |
| 57 | 71.6 | 51.1 | 24.5 | 89.0 | 54.8 | 0.63 | .001 |
| 58 | 71.6 | 47.6 | 23.2 | 88.3 | 52.0 | 0.61 | .005 |
| Ht | |||||||
| 148 | 25.0 | 81.8 | 23.4 | 83.0 | 71.4 | 0.53 | .320 |
| 150 | 39.8 | 70.1 | 22.9 | 83.9 | 64.6 | 0.55 | .146 |
| 152 | 56.8 | 56.2 | 22.4 | 85.4 | 56.3 | 0.57 | .056 |
| 154 | 69.3 | 41.0 | 20.7 | 85.7 | 46.2 | 0.55 | .129 |
| 156 | 80.7 | 27.6 | 19.9 | 86.5 | 37.3 | 0.54 | .224 |
| MUAC | |||||||
| 20 | 12.6 | 96.2 | 42.3 | 83.3 | 81.0 | 0.54 | .197 |
| 21 | 24.1 | 88.8 | 32.3 | 84.1 | 77.1 | 0.56 | .059 |
| 22 | 36.8 | 74.8 | 24.4 | 84.2 | 67.9 | 0.56 | .091 |
| 23 | 54.0 | 59.8 | 22.9 | 85.5 | 58.8 | 0.57 | .044 |
| 24 | 71.3 | 42.0 | 21.4 | 86.8 | 47.3 | 0.57 | .053 |
| 25 | 81.6 | 31.8 | 20.9 | 88.7 | 40.8 | 0.57 | .050 |
Abbreviations: AUC, area under the curve; Ht, height; LBW, low birthweight; MUAC, mid‐upper arm circumference (Wt, Ht, and MUAC data of 23.6 ± 6.55 weeks of gestation); NPV, negative predictive value; PPV, positive predictive value; Wt, weight.