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. Author manuscript; available in PMC: 2020 Mar 1.

Published in final edited form as: J Acad Nutr Diet. 2019 Jan 9;119(3):425–434. doi: 10.1016/j.jand.2018.11.003

Table 3:

Mean (± SD) anthropometric measures of Iowa Fluoride Study participants^a at approximate ages 5, 9, 11, 13, 15 and 17 years.

Anthropometric measure	Sex	Age (years)
	Sex	5	9	11	13	15	17
	Males (n)	317	285	231	267	201	214
	Females (n)	334	288	248	277	213	240
Weight (kg)	Males	20.2 ± 3.2	35.5 ± 9.6	45.4 ± 13.1	60.2 ± 17.2	70.8 ± 16.2	80.5 ± 18.0
	Females	19.7 ± 3.6	33.6 ± 8.6	44.2 ± 12.2	57.0 ± 14.6	61.9 ± 14.6	66.8 ± 16.5
Height (cm)	Males	111.8 ± 5.6	137.9 ± 7.3	149.1 ± 7.6	164.8 ± 9.2	175.3 ± 7.8	179.3 ± 7.4
Height (cm)	Females	110.9 ± 5.4	135.7 ± 6.9	148.9 ± 7.4	161.2 ± 6.4	164.5 ± 6.6	165.7 ± 6.7
BMI^b	Males	16.1 ± 1.8	18.5 ± 3.9	20.2 ± 4.6	22.0 ± 5.1	23.0 ± 4.7	25.0 ± 5.0
BMI^b	Females	15.9 ± 1.9	18.1 ± 3.6	19.7 ± 4.3	21.8 ± 5.1	22.8 ± 4.9	24.3 ± 5.8
BMI z-score^b,c	Males	0.34 ± 1.09	0.53 ± 1.06	0.59 ± 1.13	0.59 ± 1.12	0.57 ± 1.04	0.62 ± 1.12
BMI z-score^b,c	Females	0.28 ± 1.07	0.35 ± 1.11	0.36 ± 1.13	0.46 ± 1.07	0.44 ± 0.98	0.45 ± 1.01

^a

n=720; 355 male and 365 female.

^b

Body mass index

^c

Mean BMI z-scores differed between males and females at ages 9 and 11 years (P=0.049 and 0.026, respectively, 2-sample t-tests).