Height in Finland

This page is a knowledge crystal of subtype variable. The page identifier is Op_en3074
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Example URL for using the growth curve tool

sex: name: dat: + Show code- Hide code ## This code is Op_en3074/kk on page [[Height in Finland]] library(OpasnetUtils) library(ggplot2) d <- as.data.frame(t(matrix(dat, nrow = 3))) # Sarakkeiden pitää olla päivämäärä, pituus, paino. # Ensimmäisellä rivillä pitää olla syntymäpäivä, äidin pituus ja isän pituus. colnames(d) <- c("Date", "Height", "Weight") d$Height <- as.numeric(as.character(d$Height)) d$Weight <- as.numeric(as.character(d$Weight)) motheight <- d$Height[1] fatheight <- d$Weight[1] birthdate <- d$Date[1] cat("First name", name, "\n") cat("Sex", sex, "\n") cat("Mother's height", motheight, "\n") cat("Father's height", fatheight, "\n") cat("Date of birth", as.character(birthdate), "\n") d <- d[-1,] oprint(d) stat <- opbase.data("Op_en3074", subset = "Heights and weights") stat$Mean <- as.numeric(as.character(stat$Mean)) stat$Age <- as.numeric(as.character(stat$Age)) stat$Sex <- gsub("Girls", "Girl", stat$Sex) stat$Sex <- gsub("Boys", "Boy", stat$Sex) d$Date <- as.POSIXct(strptime(d$Date, format = "%d.%m.%Y")) - as.POSIXct(strptime(birthdate, format = "%d.%m.%Y")) d$Date <- as.numeric(d$Date) / 365.25 ggplot(subset(stat, Measure == "Height" & Sex == sex), aes(x = Age, y = Mean)) + geom_line() + geom_point(data = d, aes(x = Date, y = Height)) + theme_gray(base_size = 24)

Question

What are the heights (and weights) in subgroups of Finnish population?

Rationale

Data

The most comprehensive information on heights of Finnish children are gender specific growth curves. They were previously used to extract the mean and 95% confidence interval (CI) of height at each age (month or year) from 0 to 18 years. See results of variable Height of 0-18 year old Finnish children. Based on this information probability distributions of heights of children aged 0-2 years and 2-18 years were constructed. Heights of males and females are studied separately. It was assumed that the height for each 1-month or 1-year age specific interval follows a normal distribution with mean being the mean reported in growth tables and standard deviation (SD) being the higher value of SDs calculated from the bounds of the 95% CI. 2500 values of heights for each 1-month and 1-year age interval were simulated from respective normal distributions and then grouped to match groups 0-2 years (months from 0 to 24) and 2-18 years (years from 2 to 18). Since none of parametric distributions fits the resulting data sets the empirical distribution of heights was constructed. Moreover, based on simulated data Spearman's rank correlation between age and height in each age/gender group was calculated.

Results of one simulation. For each age/gender group mean height, standard deviation (sd) and five percentiles (5th, 25th, 50th, 75th, 95th) are provided.

	0-2 years males	0-2 years females	2-18 years males	2-18 years females
mean	73.4702	72.5382	133.7701	131.3875
sd	10.1565	10.082	26.7919	25.8096
p5	53.5802	53.6169	89.6924	87.2984
p25	66.9607	65.5615	112.7309	110.5635
p50	75.4076	73.968	134.202	132.3863
p75	81.2614	80.4295	155.0239	155.0243
p95	87.1823	86.706	176.0145	176.7712

Spearman's rank correlation per age and gender:

	0-2 years males	0-2 years females	2-18 years males	2-18 years females
Spearman's rank correlation	0.944	0.948	0.976	0.968

See also

• Height of 0-18 year old Finnish children