Table 2
Weight characteristics at different examination ages
| 0 | 5 (4–7) | 12 (10–18) | 48 (29–70) | |
|---|---|---|---|---|
| The target examination age is given in days with the range in parentheses. | ||||
| *Median (interquartile range). | ||||
| †Mean (SD). | ||||
| ‡Percentage (number). | ||||
| SDS, Standard deviation score. | ||||
| Number of weights | 959 | 490 | 839 | 816 |
| Actual age* | 0 | 5 (5–5) | 12 (11–14) | 48 (44–54) |
| Weight change (g) | − | −50 (171) | +193 (246) | +1479 (468) |
| % weight change | − | −1.3 (5.0) | +6.0 (7.6) | +45 (16.3) |
| Weight SDS compared with UK 1990 reference† | −0.19 (1.1) | −0.56 (1.02) | −0.49 (0.99) | −0.03 (1.00) |
| Weight SDS compared with US reference† | −0.08 (0.99) | −0.42 (0.95) | −0.36 (0.97) | +0.17 (0.95) |
| Regained birth weight‡ | − | 34% (165) | 81% (679) | 100% (816) |
| More than 5% below birth weight‡ | 17% (82) | 3.8% (32) | 0 | |
| More than 10% below birth weight‡ | − | 3.3% (16) | 1.7% (14) | 0 |
