Chunk #23 — Demonstrations — Example 1: Effect sizes of smoking quantity and nicotine dependence within assessment waves

Source

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

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By modifying the model statement, values can be obtained for Vnull as well as the variance of the model excluding smoking quantity (denoted as V-SQ rather than VA, which in this example can refer to excluding smoking quantity or excluding the nicotine dependence score).