Researchers and clinicians frequently request permission from me to use the Dysmorphic Concerns Questionnaire (DCQ). However, I do not hold the copyright for the DCQ,…
Continue reading → Permission to use the Dysmorphic Concerns Questionnaire
I tried the new Outlook preview version because it has full support for Gmail, including Contacts and the Calendar. However, I experienced two very annoying…
Continue reading → Fixing issues with Outlook Preview for Windows
A summary of Australian Bureau of Statistics' recently released Standard for Sex, Gender, Variations of Sex Characteristics and Sexual Orientation Variables for survey use.
An implementation of the free step-down resampling p-value adjustment for multiple-testing of regression models.
R code for the 2-step DerSimonian and Laird estimator for tau-squared in random-effects meta-analyses.
R Function that runs model-based boostrapping for regression, ANOVA, or ANCOVA models.
Below is the R code for conducting mediation analyses using the bootstrap method detailed in Preacher and Hayes (2004). Please note that my function uses…
This post outlines a Shiny app to calculate the required sample size for a two-group linear mixed model. It uses the power.mmrm function from the…
Continue reading → Linear Mixed Model Sample Size Calculations
This brief post provides the R syntax to calculate SF-12 v2 scores using Australian population weights. The population weights are derived from: Hawthorne, G., Osborne,…
Continue reading → SF-12 v2 scoring using Australian population weights
Sam Mancuso 
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