Table 5 Model-data fit of two shortened and the original ASI-3 scales via MGRM.

From: Development and validation of two shortened anxiety sensitive index-3 scales based on item response theory

Scale

RMSEA

CFI

TLI

ASI-3

0.051

0.957

0.966

SASI-12

0.065

0.958

0.979

SASI-6a

0.068

0.979

0.948

  1. Results obtained from the validation sample
  2. ASI-3 anxiety sensitivity index-3 with 18 items, SASI-12 12-item version of short ASI-3, SASI-6 6-item version of short ASI-3, RMSEA root mean square error of approximation, TLI Tucker-Lewis index, CFI comparative fit index.
  3. aValues obtained from the 3-dimensional confirmatory factor analysis model because the mirt package did not provide these values.
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