Chunk #142 — Demonstrations — Example 2: Effect sizes of smoking quantity and nicotine dependence across time

Source

A Practical Guide to Calculating Cohen's f(2), a Measure of Local Effect Size, from PROC MIXED.

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Finally, RAB2, R - ND2, and Cohen’s local f 2 for nicotine dependence can be obtained by modifying the A-only model above to withhold nicotine dependence rather than smoking quantity from the model as shown below; aside from file names, no other modifications are necessary as the full AB model and the null models are the same for smoking quantity and nicotine dependence.