Cohort | Home births | Private maternity home | Hospital births | All sites combined | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Number | BL (cm) | SD | range (cm) | Number | BL (cm) | SD | range (cm) | Number | BL (cm) | SD | range (cm) | Number | BL (cm) | SD | range (cm) | ||||
1908 | — | — | — | — | — | — | — | — | 14 | 48.5 | 1.4 | 46–51 | 14 | 48.5 | 1.4 | 46–51 | |||
1914 | — | — | — | — | — | — | — | — | 41 | 49.1 | 1.8 | 45–54 | 41 | 49.1 | 1.8 | 45–54 | |||
1918 | 72 | 50.6 | 3.2 | 35–58 | — | — | — | — | 93 | 49.8 | 2.5 | 36–54 | 165 | 50.1 | 2.8 | 35–58 | |||
1922 | 72 | 50.8 | 2.9 | 40–58 | — | — | — | — | 144 | 50.1 | 1.9 | 46–58 | 216 | 50.4 | 2.3 | 40–58 | |||
1930 | 75 | 51.3 | 2.5 | 40–58 | 15 | 49.4 | 1.6 | 47–53 | 174 | 50.1 | 1.5 | 47–55 | 264 | 50.4 | 1.9 | 40–58 | |||
All cohorts | 219 | 50.9 | 2.9 | 35–58 | 15 | 49.4 | 1.6 | 47–53 | 466 | 49.9 | 1.9 | 36–58 | 700 | 50.2 | 2.3 | 35–58 | |||
1908/1914 excluded | 219 | 50.9 | 2.9 | 35–58 | 15 | 49.4 | 1.6 | 47–53 | 411 | 50.0 | 1.9 | 36–58 | 645 | 50.3 | 2.3 | 35–58 |
BL = mean birth length, SD = standard deviation.