Table 1

Characteristics at birth and at age 1 year of 4130 women born at Helsinki University Central Hospital during 1934–44

Mean (SD)RangeNumber of missing values
At birth
    Birth weight (g)3327 (458)1260–54000
    Head circumference (cm)34.8 (1.4)28–4161
    Birth length (cm)49.9 (1.8)41–5955
    Ponderal index (kg/m3)26.7 (2.2)16.2–34.455
    Placental weight (g)640 (118)230–11809
    Length of gestation (days)280 (11)251–309292
At age 1 year
    Height (cm)74.4 (3.0)59.2–89.67
    Weight (kg)9.7 (1.4)4.4–16.77
    Body mass index (kg/m2)17.4 (1.6)11.9–27.17