Table 2. Proportion of samples with gestational age correctly estimated within 1 week, 2 weeks of ultrasound-validated gestational age.
| Heel prick samples | Cord blood samples | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Overall, n(%) |
SGA10, n(%) |
SGA3, n(%) |
<2500 g, n(%) |
Overall, n(%) |
SGA10, n(%) |
SGA3, n(%) |
<2500 g, n(%) |
||
|
Model 1:
Baseline Model |
RMSE n(%) within 1 week n(%) within 2 weeks |
1.46
267 (54.8) 408 (83.8) |
1.76 103 (44.6) 177 (76.6) |
2.32 17 (14.4) 64 (54.2) |
2.22 25 (28.4) 54 (61.4) |
1.51
549 (53.0) 861 (83.1) |
1.82 180 (42.5) 318 (75.0) |
2.38 31 (14.4) 111 (51.6) |
2.21 61 (37.0) 112 (67.9) |
|
Model 2:
Analyte Model |
RMSE n(%) within 1 week n(%) within 2 weeks |
1.35
279 (57.3) 431 (88.5) |
1.40 123 (53.4) 204 (88.1) |
1.38 64 (54.6) 104 (88.1) |
1.47 38 (43.2) 74 (84.1) |
1.45
544 (52.5) 874 (84.4) |
1.43 221 (52.0) 362 (85.4) |
1.48 113 (52.5) 181 (84.1) |
1.94 62 (37.6) 116 (70.3) |
|
Model 3:
Full Model |
RMSE n(%) within 1 week n(%) within 2 weeks |
1.07
311 (63.9) 459 (94.3) |
1.12 145 (62.8) 218 (94.3) |
1.30 63 (53.4) 108 (91.4) |
1.21 52 (59.1) 83 (94.3) |
1.23
615 (59.4) 937 (90.4) |
1.20 267 (63.1) 385 (90.7) |
1.40 116 (54.1) 183 (85.0) |
1.44 88 (53.3) 139 (84.2) |
Data are presented as the percentage of the number correctly classified within the total of each birthweight category. Counts were based on the average from 10 imputations rounded to the closest integer.