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Classify baseline equivalence under WWC standards

Source: R/baselinr.R
wwc_classify.Rd

Maps standardized effect sizes to the three What Works Clearinghouse baseline-equivalence categories. Sign is ignored; classification uses the absolute value of the effect size.

Usage

wwc_classify(es)

Arguments

es

Numeric vector of standardized effect sizes (e.g. values returned by hedges_g() or cox_index()).

Value

A character vector the same length as es:

  • "satisfied" when |es| <= 0.05 (no adjustment needed),

  • "satisfied_with_adjustment" when 0.05 < |es| <= 0.25 (equivalence holds only if the covariate is adjusted for in the impact model),

  • "not_satisfied" when |es| > 0.25. NA inputs return NA.

References

What Works Clearinghouse (2022). Procedures Handbook (Version 5.0). U.S. Department of Education.

Examples

wwc_classify(c(0.03, 0.12, 0.80))
#> [1] "satisfied"                 "satisfied_with_adjustment"
#> [3] "not_satisfied"