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

Comments

Originally published at http://doi.org/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

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