Table 1

 Descriptive statistics for continuous variables by sex

VariableMenWomen
NumberMean (SD)NumberMean (SD)
*Birth weight standardised for gestational age and gender in all analyses, but unstandardised summary given in this table. †Excluding study members who had never smoked. SD, standard deviation.
Fetal life
Birth weight (kg)*1653.42 (0.47)2123.38 (0.51)
Infancy and childhood
Duration of breast feeding (months)1633.99 (3.90)2063.94 (3.91)
Age at menarche (years)19413.0 (1.50)
Number of acute infections in childhood(up to age 15 years)14216.3 (8.14)17715.9 (6.96)
Childhood growth (change in z scores:birth and 9 years)129−0.59 (1.34)160−0.77 (1.36)
Adulthood
Lifetime cigarette smoking (pack years)up to age 49–51 years†10924.4 (16.8)11316.6 (11.2)
Height at age 49–51 years (m)1651.73 (0.06)2121.61 (0.06)
Weight at age 49–51 years (kg)16581.4 (13.0)21269.4 (14.1)
Total adult dietary vitamin C (mg) at age 49–51 years160104.9 (61.8)203121.8 (56.7)
Total adult dietary vitamin D (μg) at age 49–51 years1603.78 (2.41)2033.34 (1.92)
Total adult dietary protein (g) at age 49–51 years16089.6 (26.0)20382.3 (25.7)
Total adult dietary calcium (g) at age 49–51 years160988.2 (331.1)203951.4 (312.5)
Indicators of bone health at age 49–51 years
Lumbar spine BMD (g/cm2)1651.03 (0.13)2121.05 (0.14)
Total hip BMD (g/cm2)1651.01 (0.14)2110.96 (0.13)
Bone area (cm2)165110.7 (9.49)21190.6 (7.44)
Femoral neck shaft angle (degrees)165129.6 (3.30)212128.0 (3.33)