The TEST statement tests linear hypotheses about the parameters . An F test is used to jointly test the null hypotheses () specified in a single TEST statement in which the MULT option is specified.
Each equation specifies a linear hypothesis (a row of the matrix and the corresponding element of the vector); multiple equations are separated by commas. The label, which must be a valid SAS name, is used to identify the resulting output. You can submit multiple TEST statements. When a label is not included in a TEST statement, a label of "Test j" is used for the jth TEST statement.
The form of an equation is as follows:
term < term > < = term < term > >
where term is a parameter of the model, or a constant, or a constant times a parameter. When no equal sign appears, the expression is set to 0. Only parameters for regressor effects (continuous variables by themselves) are allowed.
For each TEST statement, PROC MIANALYZE displays a "Test Specification" table of the matrix and the vector. The procedure also displays a "Variance Information" table of the between-imputation, within-imputation, and total
variances for combining complete-data inferences, and a "Parameter Estimates" table of a combined estimate and standard error
for each linear component. The linear components are labeled TestPrm1
, TestPrm2
, ... in the tables.
The following statements illustrate possible uses of the TEST statement:
proc mianalyze; modeleffects intercept a1 a2 a3; test1: test intercept + a2 = 0; test2: test intercept + a2; test3: test a1=a2=a3; test4: test a1=a2, a2=a3; run;
The first and second TEST statements are equivalent and correspond to the specification in Figure 64.5.
The third and fourth TEST statements are also equivalent and correspond to the specification in Figure 64.6.
The ALPHA= and EDF options specified in the PROC MIANALYZE statement are also applied to the TEST statement. You can specify the following options in the TEST statement after a slash(/):
For more information, see the section Testing Linear Hypotheses about the Parameters.