Dizytwin: Latitude and dizygotic twinning rates

In pvrank: Rank Correlations

Description

Age-standardized dizygotic twinning rates correlate positively and significantly with latitude.

Usage

data(Dizytwin)

Format

A data frame with 19 observations on the following two variables.

Latitude

Geographical latitude in Europe.

DZT_Rate

Dizygotic twinning rates across the countries.

Details

In Europe, both mean birth weight and age-standardized dizygotic twinning rates correlate positively and significantly with latitude. It seems possible that these two sorts of correlation have explanations in common via pituitary action.

Source

James, W. H. (1985). "Dizygotic twinning, birth weight and latitude". Annals of Human Biology,12, 441–447.

Examples

	data(Dizytwin)
	head(Dizytwin)

pvrank documentation built on May 17, 2018, 9:03 a.m.