I would like to get height and age data for individuals of all ages. This previous question Age, Weight and Height dataset Lists several datasets for adults and a dataset for children. Google shows a few others that are also either all children or all adults. But I specifically want to look at the shift from the growth years to non-growth as an adult. Of course, I could combine data sets, but it is not obvious that the populations from different surveys would be comparable. Is there a single data set that covers both children and adults?