semTools: findRMSEAsamplesize – R documentation

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findRMSEAsamplesize

Find the minimum sample size for a given statistical power based on population RMSEA

Description

Find the minimum sample size for a specified statistical power based on population RMSEA. This function can be applied for both test of close fit and test of not-close fit (MacCallum, Browne, & Suguwara, 1996)

Usage

findRMSEAsamplesize(rmsea0, rmseaA, df, power = 0.8, alpha = 0.05, group = 1)

Arguments

`rmsea0`	Null RMSEA
`rmseaA`	Alternative RMSEA
`df`	Model degrees of freedom
`power`	Desired statistical power to reject misspecified model (test of close fit) or retain good model (test of not-close fit)
`alpha`	Alpha level used in power calculations
`group`	The number of group that is used to calculate RMSEA.

Details

This function find the minimum sample size for a specified power based on an iterative routine. The sample size keep increasing until the calculated power from findRMSEApower function is just over the specified power. If group is greater than 1, the resulting sample size is the sample size per group.

Author(s)

Sunthud Pornprasertmanit (psunthud@gmail.com)

References

MacCallum, R. C., Browne, M. W., & Sugawara, H. M. (1996). Power analysis and determination of sample size for covariance structure modeling. Psychological Methods, 1(2), 130–149. doi: 10.1037/1082-989X.1.2.130

Examples

findRMSEAsamplesize(rmsea0 = .05, rmseaA = .08, df = 20, power = 0.80)

semTools

Useful Tools for Structural Equation Modeling

v0.5-4

GPL (>= 2)

Authors

Terrence D. Jorgensen [aut, cre] (<https://orcid.org/0000-0001-5111-6773>), Sunthud Pornprasertmanit [aut], Alexander M. Schoemann [aut] (<https://orcid.org/0000-0002-8479-8798>), Yves Rosseel [aut] (<https://orcid.org/0000-0002-4129-4477>), Patrick Miller [ctb], Corbin Quick [ctb], Mauricio Garnier-Villarreal [ctb] (<https://orcid.org/0000-0002-2951-6647>), James Selig [ctb], Aaron Boulton [ctb], Kristopher Preacher [ctb], Donna Coffman [ctb], Mijke Rhemtulla [ctb] (<https://orcid.org/0000-0003-2572-2424>), Alexander Robitzsch [ctb] (<https://orcid.org/0000-0002-8226-3132>), Craig Enders [ctb], Ruben Arslan [ctb] (<https://orcid.org/0000-0002-6670-5658>), Bell Clinton [ctb], Pavel Panko [ctb], Edgar Merkle [ctb] (<https://orcid.org/0000-0001-7158-0653>), Steven Chesnut [ctb], Jarrett Byrnes [ctb], Jason D. Rights [ctb], Ylenio Longo [ctb], Maxwell Mansolf [ctb] (<https://orcid.org/0000-0001-6861-8657>), Mattan S. Ben-Shachar [ctb] (<https://orcid.org/0000-0002-4287-4801>), Mikko Rönkkö [ctb] (<https://orcid.org/0000-0001-7988-7609>)

Initial release