UASCALE= the anchor user-scale value of 1 logit = 0

Specifies the number of units per logit of the anchor values.

UASCALE=0 - the anchor values are in the current output scale set with USCALE=

UASCALE= other value - this is the units per logit of the anchor values.

 

UIMEAN= and UPMEAN= are ignored when there are anchor values.

 

Example 1: The anchor values are user-scaled such that 1 logit is 45.5 units, so that differences of -100, -50, 0, +50, +100 correspond to success rates of 10%, 25%, 50%, 75%, 90%:

UASCALE = 45.5

; 1 logit = 45.4 user-units

USCALE = 1

report in logits

 

Example 2: The anchor values are on one scaling, but you want the reported values to be on another scaling.

UASCALE= 5

; there are 5 units per logit in the scaled values

USCALE=10

; you want 10 units per logit on the reported values

 

Example 3: The anchor measures are in logit scaling, the output measures are to be in user-scaling.

UASCALE= 1

; anchor values in logits

USCALE=30

; 30 user-units per logit

 

Example 4: Anchor measures are in same scaling as the output measures

UASCALE= 0

; anchor values in USCALE= scaling. 0 to ignore (default)

USCALE=user-value

; also used for anchor values

 

Example 5: Anchor values are scaled in Probits, not Logits

UASCALE = 0.588

; 1 logit = 0.588 probits

USCALE = 1

report in logits

 

Example 6: Anchor values are to be rescaled with a new range

IAFILE= (values)

the anchor values in anchor-value scaling

UASCALE= value

; anchor value scaling: on input anchor values converted to logits

UIMEAN=0

to set the internal base line

TFILE=*

in control file: done after analysis, but before reporting

USCALE=value

user-rescaling with new range

UIMEAN=value

user-rescaling with new offset

.......

any other instructions for TFILE=

*

 

 

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