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Average male height Average female height Stature ratio (male to female) Sample population / age range Share of pop. over 18 covered [9] [10] [b] Method Year Ref. Afghanistan: 168.2 cm (5 ft 6 in) 155.3 cm (5 ft 1 in) 1.08: 18–69 (N= m:1,979 f:1,687) 97.2%: Measured: 2018 [11] Albania: 176.6 cm (5 ft 9 + 1 ⁄ 2 in) 166.8 cm (5 ft 5 + 1 ⁄ 2 ...
By doing this, doctors can track a child's growth over time and monitor how a child is growing in relation to other children. There are different charts for boys and girls because their growth rates and patterns differ. For both boys and girls there are two sets of charts: one for infants ages 0 to 36 months and another for ages 2 and above.
The height, weight, and head circumference of a child can be compared to the expected parameters of children of the same age and sex to determine whether the child is growing appropriately. Growth charts can also be used to predict the expected adult height and weight of a child because, in general, children maintain a fairly constant growth curve.
The sample size likely includes more people in their 20's/30's than 40's/50's. Given these possibilities, I do not think the "claims" are extraordinary at all. The peer-reviewed studies were accurate in 2002, not in 2008, as data suggests that China is one of the fastest growing countries in terms of human height.
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The median (50th percentile) growth curves for males and females 0−20 years in the United States. The study of height is known as auxology. [11]Growth has long been recognized as a measure of the health of individuals, hence part of the reasoning for the use of growth charts.
Mean height of adult women by year of birth. Data for the latest cohort (the year 1996) is therefore the mean height of women aged 18 in 2014. ... 2020 (chart ...
In the most extreme population comparisons, for example, the average female height in Bolivia is 142.2 cm (4 ft 8.0 in) while the average male height in the Dinaric Alps is 185.6 cm (6 ft 1.1 in), an average difference of 43.4 cm (1 ft 5.1 in).