A Power Calculator for the Classical Twin Design. Academic Article

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.

authors

• Verhulst, Bradley

published proceedings

• Behav Genet

altmetric score

• 10.55

author list (cited authors)

• Verhulst, B.

citation count

• 78

complete list of authors

• Verhulst, Brad

publication date

• January 2017

publisher

• Springer Nature  Publisher

published in

• Behavior Genetics: an international journal devoted to research in the inheritance of behavior in animals and man  Journal

keywords

• Algorithms
• Biometrical Genetics
• Humans
• Models, Genetic
• Power
• Statistics As Topic
• Twin Study
• Twins
• Variance Components

Digital Object Identifier (DOI)

• 10.1007/s10519-016-9828-9

start page

• 255

end page

• 261

volume

• 47

issue

• 2

URL

• http://dx.doi.org/10.1007/s10519-016-9828-9