Table 7 Birth weight means and standard deviations for each developmental milestone onset age by gestational age classification considered with birth weight
Gestational age classification considered with birth weight | Developmental milestone | Mean onset age in months (standard deviations); n | # Premature; # late pre-term (34 to 36Â weeks) | Means in grams (standard deviations) |
|---|---|---|---|---|
SGA | Rolling | 5.08 (2.58); 42 | 35; 0 | 2258.47 (582.89) |
| Â | Sitting | 7.28 (1.90); 51 | 38; 13 | Â |
| Â | Crawling | 9.34 (2.35); 47 | 44; 14 | Â |
| Â | Walking | 14.30 (4.12); 72 | 55; 21 | Â |
| Â | Solids | 10.26 (3.46); 33 | 25; 9 | Â |
| Â | Words | 14.73 (7.04); 60 | 45; 14 | Â |
| Â | Sentences | 25.68 (11.85); 50 | 35; 8 | Â |
AGA | Rolling | 4.79 (2.12); 270 | 25; 12 | 3502.65 (357.95) |
| Â | Sitting | 6.58 (1.53); 325 | 35; 11 | Â |
| Â | Crawling | 8.61 (2.53); 295 | 31; 11 | Â |
| Â | Walking | 13.34 (3.48); 451 | 51; 13 | Â |
| Â | Solids | 9.07 (3.88); 222 | 21; 5 | Â |
| Â | Words | 13.99 (6.97); 340 | 37; 11 | Â |
| Â | Sentences | 21.79 (9.81); 291 | 32; 8 | Â |
LGA | Rolling | 4.58 (1.73); 31 | 0; 10 | 4415.12 (304.64) |
| Â | Sitting | 7.14 (2.18); 40 | 0; 0 | Â |
| Â | Crawling | 8.76 (2.02); 39 | 0; 0 | Â |
| Â | Walking | 13.17 (2.62); 56 | 0; 0 | Â |
| Â | Solids | 8.75 (3.01); 28 | 0; 0 | Â |
| Â | Words | 12.50 (4.26); 43 | 0; 0 | Â |
| Â | Sentences | 17.84 (7.75); 34 | 0; 0 | Â |