comment		Data files for Camilli, Vargas & Yurecko (2003) analysis.

comment		Original regressions -- minor modifications made to data from 5/8/2003 report.
comment  	For descriptions of weighting strategies, see Camilli et al. (2003)
			http://epaa.asu.edu/epaa/v11n15/. Improved indicators added for language activities:
			(tl2 & cl2).

REGRESSION
  /MISSING LISTWISE
  /REGWGT=wgt1
  /STATISTICS COEFF OUTS R ANOVA
  /CRITERIA=PIN(.01) POUT(.05)
  /DEPENDENT dpool
  /METHOD=ENTER tp1 tp2  
 /METHOD=STEPWISE tr tb tl cp cr cb cl grade random
  standard months tutor.

REGRESSION
  /MISSING LISTWISE
  /REGWGT=wgt3
  /STATISTICS COEFF OUTS R ANOVA
  /CRITERIA=PIN(.01) POUT(.05)
  /DEPENDENT dpool
  /METHOD=ENTER tp1 tp2  
 /METHOD=STEPWISE tr tb tl cp cr cb cl grade random
  standard months tutor.

comment	Regressions with modified treatment indicators. modifications are described
		in Camilli, Wolfe, and Smith (2004, forthcoming) Elementary School Journal.

REGRESSION
  /MISSING LISTWISE
  /REGWGT=wgt1
  /STATISTICS COEFF OUTS R ANOVA
  /CRITERIA=PIN(.01) POUT(.05)
  /DEPENDENT dpool
  /METHOD=ENTER tp1 tp2  
  /METHOD=STEPWISE tr tb  cp cr cb tl_1 tl_2 cl_1 cl_2 grade random
  standard months tutor.

REGRESSION
  /MISSING LISTWISE
  /REGWGT=wgt3
  /STATISTICS COEFF OUTS R ANOVA
  /CRITERIA=PIN(.01) POUT(.05)
  /DEPENDENT dpool
  /METHOD=ENTER tp1 tp2  
  /METHOD=STEPWISE tr tb  cp cr cb tl_1 tl_2 cl_1 cl_2 grade random
  standard months tutor.

comment	Weighted descriptive statistics.

weight by wgt1.
MEANS
  TABLES=dpool  BY tp
  /CELLS MEAN STDDEV COUNT  .

weight by wgt3.
MEANS
  TABLES=dpool  BY tp
  /CELLS MEAN STDDEV COUNT  .

weight off.

comment	Multilevel analyses are given below and can be used to obtain better
		estimates of standard errors given that model errors for multiple
		effect sizes are correlated within studies.

comment Multilevel analyses -- unweighted.

MIXED
  dpool  WITH tutor tp2 tl_2 cl_2
  /CRITERIA = CIN(95) MXITER(100) MXSTEP(5) SCORING(1)
  SINGULAR(0.000000000001) HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE)
  PCONVERGE(0.000001, ABSOLUTE)
  /FIXED = tutor tp2 tl_2 cl_2  | SSTYPE(3)
  /METHOD = REML
  /PRINT = SOLUTION
 /RANDOM INTERCEPT  | SUBJECT(id) COVTYPE(VC) .


comment Multilevel analyses -- weight type 1.

MIXED
  dpool  WITH tutor tp2 tl_2 cl_2
  /CRITERIA = CIN(95) MXITER(100) MXSTEP(5) SCORING(1)
  SINGULAR(0.000000000001) HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE)
  PCONVERGE(0.000001, ABSOLUTE)
  /FIXED = tutor tp2 tl_2 cl_2  | SSTYPE(3)
  /METHOD = REML
  /PRINT = SOLUTION
 /RANDOM INTERCEPT  | SUBJECT(id) COVTYPE(VC)
  /REGWGT = wgt1  .


comment Multilevel analyses -- weight type 3.

MIXED
  dpool  WITH tutor tp2 tl_2 cl_2
  /CRITERIA = CIN(95) MXITER(100) MXSTEP(5) SCORING(1)
  SINGULAR(0.000000000001) HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE)
  PCONVERGE(0.000001, ABSOLUTE)
  /FIXED = tutor tp2 tl_2 cl_2  | SSTYPE(3)
  /METHOD = REML
  /PRINT = SOLUTION
 /RANDOM INTERCEPT  | SUBJECT(id) COVTYPE(VC)
  /REGWGT = wgt3  .