zygo_type: Find how many twins have answered

In LCBC-UiO/Questionnaires: Package with functions to calculate components and sums for LCBC questionnaires

Find how many twins have answered

Description

The zygocity calculations are different depending on wheather both twins have answered the questionnaire or not. This convenience function help determine, based on the column coding for twin pairs, if one or two twins are present in the data with complete viable data. If both twins are in the data, but one twin has incomplete data, the function will return "single" for the remaining twin.

Usage

zygo_type(data, twin_col, cols = starts_with("zygo"))

Arguments

data	dara.frame with the relevant data
twin_col	column that codes for twin pairs. Each twin should have the same identifier here.
cols	columns that contain the zygocity data. Use tidy-selectors

Value

full data frame with twin type appended

LCBC-UiO/Questionnaires documentation built on July 18, 2023, 6:45 p.m.