Document Type
Article
Original Publication Date
2017
Journal/Book/Conference Title
Behavior Genetics
Volume
47
Issue
2
First Page
255
Last Page
261
DOI of Original Publication
10.1007/s10519-016-9828-9
Date of Submission
June 2017
Abstract
Power is a ubiquitous, though often overlooked, component of any statistical analyses. Almost every funding agency and institutional review board requires that some sort of power analysis is conducted prior to data collection. While there are several excellent on line power calculators for independent observations, twin studies pose unique challenges that are not incorporated into these algorithms. The goal of the current manuscript is to outline a general method for calculating power in twin studies, and to provide functions to allow researchers to easily conduct power analyses for a range of common twin models. Several scenarios are discussed to demonstrate the importance of various factors that influence the power within the classical twin design and to serve as examples for the provided functions.
Rights
© Springer Science+Business Media New York 2016
Is Part Of
VCU Psychiatry Publications
Comments
Originally published at http://doi.org/10.1007/s10519-016-9828-9