However, sample size determination is not straightforward for mediation analysis of longitudinal design. To facilitate planning the sample size for longitudinal mediation studies with a multilevel mediation model, this article provides the sample size required to achieve 80% power by simulations under ...
Sample size determination for mediation analysis of longitudinal data Sample size planning for longitudinal data is crucial when designing mediation studies because sufficient statistical power is not only required in grant a... H Pan,S Liu,D Miao,... - 《Bmc Medical Research Methodology》 被引量...
A sample size of at least 500 was needed for accurate point and variance estimates of the proportion mediated. The point and variance estimates of the ratio of the mediated to nonmediated effect did not st...David P. MacKinnon... David P. MacKinnon,Ghulam Warsi,James H. Dwyer - 《Multiva...
PASS contains several procedures for sample size calculation and power analysis for regression, including linear regression, confidence intervals for the linear regression slope, multiple regression, Cox regression, Poisson regression, and logistic regression. Each procedure is easy-to-use and is carefully...
Inadequate statistical power to detect treatment effects in health research is a problem that is compounded when testing for mediation. In general, the preferred strategy for increasing power is to increase the sample size, but there are many situations where additional participants cannot be recruited...
Statistical power analysis and sample size planning for moderated mediation models Conditional process models, including moderated mediation models and mediated moderation models, are widely used in behavioral science research. However, f... Z Xu,F Gao,A Fa,... - 《Behavior Research Methods》 被引...
Example 1: Latent Mediation Analysis Example 2: Moderated Mediation Analysis BugsReports Functions under development Description Using Monte Carlo simulation method and the binary search, this "sampleMplus" package can provide sample size recommendation for your structural equation models. The sample size...
Is there any rule of thumb about the requirement of sample size for path analysis (no latent trait was specified)? For instance, I have a very complex model with 150 parameters to be estimated, whereas each dependent variable has only 3 independent variables. The sample size is 200. The...
In this second article, advanced issues are addressed, including fit indices and sample size, moderators, longitudinal data, mediation, and so forth.关键词: Structural equations models Factor analysis Path models Statistical methods Fit indices
PASS 2024 adds 40 new sample size procedures and includes a variety of enhancements. Among the new procedures are 16 meta-analysis procedures, 4 procedures for comparing two groups with clustering in only one arm, and 13 additional multi-arm treatment versus control procedures. There are also ...