01 May 2025 : Database Analysis
Defining Effect Size Standards in Temporomandibular Joint and Masticatory Muscle Research
Grzegorz Zieliński
ABCDEFG 1*, Piotr Gawda DE 1
DOI: 10.12659/MSM.948365
Med Sci Monit 2025; 31:e948365
Table 2 Comparison of Cohen’s guidelines and quantitatively derived estimates for effect sizes.
| Characteristic | N | Effect size | ||
|---|---|---|---|---|
| Small | Medium | Large | ||
| Group differences (Hedges’ g) | ||||
| Cohen (1988) | – | 0.20 | 0.50 | 0.80 |
| Overall | 456 | 0.11 | 0.34 | 0.74 |
| ≈ | 0.10 | 0.30 | 0.70 | |