Table 5.

Developmental Trajectory Fit Statistics and Prevalence Rates

	Model Fit Statistics		Prevalence Rates		Treatment Effect Size
	Average Posterior Probability	Odds of Correct Classification	Head Start REDI Children	Head Start as Usual Children	Odds of Being from REDI
Social Competence
1 High-Increasing	.88	19.75	33%	21%	1.80*
2 Moderate-Stable	.84	5.15	50%	51%	.94
3 Low-Stable	.89	27.93	18%	28%	.57*
Aggressive-Oppositional Behavior
1 Low-Decreasing	.89	9.89	53%	37%	1.88**
2 Moderate-Stable	.85	7.83	36%	47%	.63*
3 High-Stable	.90	60.23	11%	15%	.70
Learning Engagement
1 High-Stable	.91	17.98	43%	29%	1.93**
2 High-Decreasing	.88	7.05	46%	56%	.65*
3 Moderate-Decreasing	.85	57.30	8%	9%	.92
4 Low-Variable	.89	194.18	3%	6%	.50
Attention Problems
1 Low-Stable	.88	16.32	36%	26%	1.60*
2 Moderate-Increasing	.83	5.73	43%	49%	.78
3 High-Increasing	.90	28.50	22%	26%	.81
Student-Teacher Closeness
1 High-Stable	.83	5.51	54%	40%	1.72*
2 High-Decreasing	.82	4.94	43%	54%	.62*
3 Moderate-Decreasing	.92	276.00	4%	5%	.68
Peer Rejection
1 Low-Variable	.88	3.78	72%	60%	1.66*
2 Moderate-Increasing	.85	11.00	28%	40%	.60*

Note:

^**p < .01

^*p < .05