Sensitivity, specificity, positive predictive values (PPV) and negative predictive values (NPV) with 95% CIs for each outcome and anthropometric measured on day 5 of life, using the cut-offs identified based on measurements taken within 24 hours of life (n=123)
| Outcome | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) |
| Low birth weight (<2500 g) | ||||
| FL≤7.7 cm | 71.4 (47.8 to 88.7) | 75.5 (66.0 to 83.5) | 37.5 (22.7 to 54.2) | 92.8 (84.9 to 97.3) |
| CHC≤31.2 cm | 71.4 (47.8 to 88.7) | 93.1 (86.4 to 97.2) | 68.2 (45.1 to 86.1) | 94.1 (87.5 to 97.8) |
| MUAC≤9.8 cm | 95.2 (76.2 to 99.9) | 70.6 (60.7 to 79.2) | 40.0 (26.4 to 54.8) | 98.6 (92.6 to 100) |
| Premature—New Ballard Score | ||||
| FL≤7.5 cm | 60.0 (26.2 to 87.8) | 78.8 (70.3 to 85.8) | 19.4 (7.5 to 37.5) | 95.9 (89.8 to 98.9) |
| CHC≤31.4 cm | 60.0 (26.2 to 87.8) | 84.7 (77.0 to 90.7) | 25.0 (9.8 to 46.7) | 96.2 (90.4 to 98.9) |
| MUAC≤10 cm | 100 (69.2 to 100) | 46.6 (37.4 to 56.0) | 13.7 (6.8 to 23.8) | 100 (93.5 to 100) |
| Premature—Eregie model | ||||
| FL≤7.4 cm | 62.5 (24.5 to 91.5) | 93.3 (87.3 to 97.1) | 38.5 (13.9 to 68.4) | 97.4 (92.6 to 99.5) |
| CHC≤30.1 cm | 75.0 (34.9 to 96.8) | 93.3 (87.3 to 97.1) | 42.9 (17.7 to 71.1) | 98.2 (93.8 to 99.8) |
| MUAC≤9.5 cm | 100 (63.1 to 100) | 67.5 (58.3 to 75.8) | 17.0 (7.6 to 30.8) | 100 (95.5 to 100) |
CHC, chest circumference; FL, foot length; MUAC, mid-upper arm circumference.