Cohort | Home births | Private maternity home | Hospital births | All sites combined | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Number | BW (g) | SD | range (g) | Number | BW (g) | SD | range (g) | Number | BW (g) | SD | range (g) | Number | BW (g) | SD | range (g) | ||||
1908 | — | — | — | — | — | — | — | — | 14 | 2942 | 342 | 2440–3500 | 14 | 2942 | 342 | 2440–3500 | |||
1914 | 68 | 3670 | 578 | 2500–5500 | 2 | 3118 | 88 | 3055–3180 | 41 | 3156 | 347 | 2480–3800 | 111 | 3470 | 557 | 2480–5500 | |||
1918 | 105 | 3716 | 540 | 2200–5000 | 7 | 3992 | 572 | 3185–4840 | 93 | 3306 | 460 | 2040–4310 | 205 | 3539 | 549 | 2040–5000 | |||
1922 | 106 | 3661 | 475 | 2600–5200 | 7 | 3733 | 217 | 3450–4100 | 144 | 3339 | 472 | 2100–4270 | 257 | 3483 | 495 | 2100–5200 | |||
1930 | 75 | 3681 | 521 | 2560–5000 | 15 | 3246 | 525 | 2305–4300 | 174 | 3482 | 474 | 2350–4950 | 264 | 3525 | 501 | 2305–5000 | |||
All cohorts | 354 | 3683 | 523 | 2200–5500 | 31 | 3516 | 561 | 2305–4840 | 466 | 3358 | 472 | 2040–4950 | 851 | 3499 | 521 | 2040–5500 | |||
1908 excl | 354 | 3683 | 523 | 2200–5500 | 31 | 3516 | 561 | 2305–4840 | 452 | 3371 | 470 | 2040–4950 | 837 | 3508 | 519 | 2040–5500 |
BW = mean birth weight, SD = standard deviation.