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. Author manuscript; available in PMC: 2018 May 3.
Published in final edited form as: J Appl Meas. 2007;8(1):48–64.

Table 5.

Construct Validity of Raw, Rasch and CAT Clinical Triage Groups

Related Construct Variablea
Categorization (low/mod/high) based on Current
Withdrawal
Scale
(CWS)		 Substance
Frequency
Scale
(SFS)		 Emotional
Problem
Scale
(EPS)		 Recovery
Environment
Risk Index
(RERI)		 Health
Problem
Scale
(HPS)
Substance Problem Scale Triage Groupb
    Raw Sx Count 0.46 0.33 0.36 0.33 0.21
    Full Rasch 0.53 0.39 0.44 0.38 0.23
    CAT Rasch w/Random Average (range for stopping rules) 0.47 (.40–.50) 0.36 (.34–.38) 0.33 (.28–.36) 0.32 (.30–.36) 0.16 (.14–.17)
    CAT Rasch w/Screener Average (range for stopping rules) 0.48 (.47–.48) 0.39 (.38–.39) 0.34 (.33–.34) 0.34 (.32–.35) 0.15 (.14–.16)
Substance Dependence Scale Triage Groupsc
    Raw Sx Count 0.53 0.38 0.36 0.37 0.19
    Full Rasch 0.54 0.43 0.41 0.39 0.22
    CAT Rasch w/Random Average (range for stopping rules) 0.57 (.56–.58) 0.45 (.44–.46) 0.44 (.43–.45) 0.40 (.38–.41) 0.23 (.22–.23)
    CAT Rasch w/Screener Average (range for stopping rules) 0.57 (.55–.59) 0.43 (.42–.43) 0.43 (.40–.45) 0.39 (.36–.41) 0.22 (.20–.23)
a

All correlations significantly different than 0 at p<.05; None of the column differences within SPS or within SDS are statistically significant.

b

The SPS raw symptom (Sx) count triage is based on 0\ 1 to 9 \ 10 to 16 symptoms; For the Rasch/CAT versions the triage is based on less than −2.50 / −2.50 to −0.10 / > −.10 logits.

c

The SDS raw symptom (Sx) count triage is based on 0 to 2 \ 3 to 5 \ 6 to 7 symptoms; For the Rasch/CAT versions the triage is based on less than −.75 / −.75 to +.70 / > +.70 logits.