SPSS® 12.0 Command Syntax Reference

722 HILOGLINEAR
• You can specify the name of a variable whose values are cell weights, or provide a matrix
of cell weights enclosed in parentheses.
• If you use a variable to specify cell weights, you are allowed only one CWEIGHT subcommand.
• If you specify a matrix, you must provide a weight for every cell in the contingency table,
where the number of cells equals the product of the number of values of all variables.
• Cell weights are indexed by the values of the variables in the order in which they are specified
on the variable list. The index values of the rightmost variable change the most
quickly.
• You can use the notation n*cw
to indicate that cell weight cw is repeated n times in the
matrix.
Example
HILOGLINEAR V1(1,2) V2(1,2) V3(1,3)
/CWEIGHT=CELLWGT
/DESIGN=V1*V2, V2*V3, V1*V3.
• This example uses the variable CELLWGT to assign cell weights for the table. Only one
CWEIGHT subcommand is allowed.
Example
HILOGLINEAR V4(1,3) V5(1,3)
/CWEIGHT=(0 1 1 1 0 1 1 1 0)
/DESIGN=V4, V5.
• The HILOGLINEAR command sets the diagonal cells in the model to structural zeros. This
type of model is known as a quasi-independence model.
• Because both V4 and V5 have three values, weights must be specified for nine cells.
• The first cell weight is applied to the cell in which V4 is 1 and V5 is 1; the second weight
is applied to the cell in which V4 is 1 and V5 is 2; and so on.
Example
HILOGLINEAR V4(1,3) V5(1,3)
/CWEIGHT=(0 3*1 0 3*1 0)
/DESIGN=V4,V5.
• This example is the same as the previous example except that the n*cw notation is used.