. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Except Child. 2015 Jan 20;81(4):443–470. doi: 10.1177/0014402914563702

Table 4.

Model Characteristics for Distal Calculation Outcome

Parameter	Distal (Standardized) Calculation
Parameter	Parameter Estimate	(S.E.)	df	t/z/F	95% CI
Unconditional Model
Fixed: Intercept (γ₀₀₀)	−0.00	(0.07)	21.9	−0.01	−0.14 to 0.15
Random: Teacher ( $σ_{u 0}^{2}$ )	0.14	(0.06)		2.38^b	0.07 to 0.38
School ( $σ_{v 0}^{2}$ )	0.02	(0.03)		0.71	0.00 to 24.13
Residual ( $σ_{e}^{2}$ )	0.53	(0.06)		9.55^c	0.43 to 0.65
Full/Final Model
Model Fit:	Dev = 636.2; Param = 3; BIC = 645.9
Fixed: Intercept (γ₀₀₀)	0.57	(0.92)	244	0.63	−1.23 to 2.38
Pretest	0.03	(0.00)	245	8.66^c	0.02 to 0.04
Age	−0.44	(0.10)	243	−4.47^c	−0.63 to −0.25
Spec. Ed. (Receive)	−0.31	(0.11)	244	−2.67^b	−0.54 to −0.08
Treatment (CAL)	0.73	(0.09)	67.8	8.07^c	0.55 to 0.91
Treatment (WP)	0.26	(0.09)	74.9	2.90^b	0.08 to 0.44
Cohort (1)	−0.11	(0.13)	36.2	−0.89	−0.37 to 0.15
Cohort (2)	−0.04	(0.14)	45.2	−0.27	−0.31 to 0.24
Cohort (3)	0.01	(0.13)	33.8	0.06	−0.26 to 0.28
Random: Teacher ( $σ_{u 0}^{2}$ )	0.00	(0.02)		0.31	0.00 to −0.00
School ( $σ_{v 0}^{2}$ )	0.03	(0.02)		1.64	0.01 to 0.15
Residual ( $σ_{e}^{2}$ )	0.27	(0.03)		9.70^c	0.22 to 0.33
Model Fit:	Dev = 436.0; Param = 3; BIC = 445.6

Note. See note for Table 3. The pretest was WRAT Arithmetic. The code 0 is for the treatment control group, for no special education, and for Cohort 4.