Table 2.

Formulas for Growth-Modeling Effect Sizes in the Clinical Literature Applied to Mock Data in Table 1

Study	Reported Formula	d
Antoni et al., 2006	d = β/(τ)1/2	29.36
Atkins, Berns et al., 2005	r = (t2/( t2 + df))1/2	4.15
Atkins, Eldridge et al., 2005	d = β/(τ)1/2	29.36
Brown et al. 2005	d = β/(τ)1/2	29.36
Christensen et al., 2004	d = β/(τ)1/2	29.36
Dimidjian et al., 2006	d = β/(τ)1/2	29.36
Fraser et al., 2005	d = β/(τ + σ2)1/2	.89
Rye et al., 2005	d = β/σ	.89
Sandler et al., 2003	d = t (n1 + n2)/(df)1/2(n1n2)1/2	4.15
Schulz et al., 2006	r = (t2/(t2 + df))1/2	4.15
Tolan et al., 2004	d = β/(τ)1/2	29.36

Note. d is the effect size when the reported formula was applied to the statistics generated from HLM analysis of the mock data in Table 1 (with r-to-d conversion applied when tabled formula was expressed in the r metric). In HLM, σ² refers to the Level 1 error variance.