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. 1999 Apr 3;318(7188):897. doi: 10.1136/bmj.318.7188.897

Table 1.

Characteristics of males and females at age 9 and 18 years. Values are means (SD)

Characteristic Males Females
Age 9: (n=419) (n=376)
 Systolic blood pressure (mm Hg)* 107.0 (7.28) 106.1 (7.24)
 Diastolic blood pressure (mm Hg) 68.7 (6.71) 68.5 (7.03)
 Body mass index (kg/m2) 16.3 (1.55) 16.4 (1.77)
 Height (cm) 132.7 (5.41) 131.8 (5.77)
 Birth weight (kg) 3.4 (0.53) 3.3 (0.52)
 Mother’s height (cm) 162.7 (5.68) 163.1 (6.01)
Age 18: (n=444) (n=407)
 Systolic blood pressure (mm Hg) 126.0 (9.38) 115.4 (9.27)
 Diastolic blood pressure (mm Hg) 56.8 (10.57) 56.8 (9.06)
 Body mass index (kg/m2) 22.7 (3.17) 22.9 (3.17)
 Height (cm) 176.1 (6.21) 164.1 (6.08)
 Birth weight (kg) 3.5 (0.53) 3.3 (0.51)
 Mother’s height (cm) 162.7 (5.81)  163.2 (6.13)
*

Recorded for 811 children, but analysis restricted to children with no data missing. 

1 Observation missing in each group. 

13 Observations missing for males and 4 observations missing for females.