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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Read Writ. 2015 Oct 12;29(2):267–295. doi: 10.1007/s11145-015-9593-9

Table 6.

Change in DVAR from fall to spring (Delta DVAR) Predicting Reading Comprehension (RC)

Fixed effect Coefficient SE t-ratio df p
Spring reading comprehension (mean W) 479.28 1.79 267.35 27 <0.001
 Effect of SCHFARL −0.09 0.04 −2.40 27 0.024
Fall Vocabulary (W) 0.15 0.10 1.60 66 0.113
Fall RC (W Scores) 0.60 0.08 7.55 66 <0.001
Fall Language (DS) 0.005 0.01 −0.35 66 0.726
Fall Non-word reading (DS) 0.01 0.01 1.39 66 0.170
Delta DVAR −0.23 0.10 −2.29 66 0.025
 SCHFARL X Delta DVAR effect −0.003 0.003 −1.04 66 0.301
STFARL 0.46 2.30 0.20 66 0.841

Final estimation of variance components

Random effects SD Variance df χ2 p

Intercept, r0 0.31 0.09 27 15.38 >0.500
Level 1, e 8.45 71.32

Note. Deviance = 747.12, School-wide % Free And Reduced Lunch (SCHFARL) and all continuous variables are grand mean centered, Student FARL (STFARL, 0 = did not receive, 1 = received) is not centered. Vocabulary = Woodcock Johnson III (WJ3) Picture Vocabulary W score, RC = WJ3 Passage Comprehension W score. DS = Developmental Scale Score from the DELV-S, Delta DVAR = empirical Bayes residuals.