TABLE 1.
Notation for estimators of the standardized mean difference in 13 meta-analysis books (sorted by publication years).
| Book | Notation | |||
|---|---|---|---|---|
| Glass’ Δ in Equation (15) | Cohen’s d in Equation (1) | Cohen’s d′ in Equation (16) | Hedges’ g in Equation (7) | |
| Hedges and Olkin15 (1985) | g′ | g | d | |
| Hunter and Schmidt81 (1990) | dG | d | NA | d⋆ |
| Stangl and Berry31 (2000) | NA | z | NA | NA |
| Egger et al.27 (2001) | Δ | d | NA | g |
| Lipsey and Wilson34 (2001) | NA | ESsm | NA | |
| Hartung et al.28 (2008) | Δ | g | d | g⋆ |
| Borenstein et al.30 (2009) | NA | d | NA | g |
| Cooper et al.29 (2009) | NA | d | NA | g |
| Schlattmann36 (2009) | NA | d | NA | g |
| Card82 (2012) | gGlass | g | d | gadjusted |
| Pigott33 (2012) | NA | NA | NA | d |
| Koricheva et al.32 (2013) | NA | NA | NA | d |
| Schwarzer et al.35 (2015) | NA | NA | NA | g |
Note: NA, not available.