Table 4.

Model-implied means and differences from latent growth model analysis

	At mean baseline stigma
Wave	Control	Intervention	D	Z	p	d
1	2.83	2.83	0	–	–	0
2	2.80	2.63	−0.17	−6.69	<.001	−0.30
3	2.79	2.68	−0.10	−3.33	<.001	−0.15
4	2.75	2.61	−0.14	−3.30	.001	−0.15
	At 1 SD below baseline stigma
Wave	Control	Intervention	D	Z	p	d
1	2.39	2.39	0	–	–
2	2.36	2.10	−0.26	−6.63	<0.001	−0.30
3	2.34	2.17	−0.17	−3.85	<0.001	−0.17
4	2.31	2.08	−0.23	−4.40	<0.001	−0.20
	At 1 SD above baseline stigma
Wave	Control	Intervention	D	Z	p	d
1	3.27	3.27	0	–	–
2	3.25	3.17	−0.08	−2.00	0.045	−0.09
3	3.22	3.18	−0.04	−1.07	0.28	−0.05
4	3.20	3.15	−0.05	−0.98	0.33	−0.04

Notes: N=506. D=Difference defined as control group mean minus intervention group mean. d=approximate standardized D defined as D/(SE*sqrt(N)), where SE is the standard error of the estimate and N is the sample size. Model-implied means, differences and associated test statistics were estimated using full-information maximum likelihood (FIML) with residual bootstrap-based standard errors in Mplus 7.