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. Author manuscript; available in PMC: 2023 Sep 1.
Published in final edited form as: J Learn Disabil. 2021 Oct 9;55(5):427–442. doi: 10.1177/00222194211047631

Table 5.

Coefficient Estimates of Regressions Using ARHQ-brief and ARHQ in Training and Test Sets

ARHQ-brief ARHQ
Unstandardized coefficient Standardized coefficient R 2 Adjusted R2 Unstandardized coefficient Standardized coefficient R 2 Adjusted R2
Adults in Training Set
 Composite 0–3.137*** −0.707 50.0% 49.3% 0–3.772*** −0.596 35.6% 34.7%
 SWE raw −22.814*** −0.425 18.0% 17.0% −24.725*** −0.324 10.5% 9.4%
 PDE raw −27.794*** −0.665 44.2% 43.5% −32.792*** −0.552 30.5% 29.7%
 WID-WRMT raw −13.829*** −0.649 42.2% 41.4% −16.671*** −0.549 30.2% 29.3%
 WA-WRMT raw 0–8.827*** −0.506 25.6% 24.7% −10.039*** −0.405 16.4% 15.4%
 PC raw 0–7.285*** −0.404 16.3% 15.3% −10.220*** −0.399 16.0% 14.9%
Children in Training Set
 Composite 0–3.906*** −0.557 31.1% 29.5% 0–4.331*** −0.447 20.0% 18.2%
SWE SS −40.694*** −0.463 21.5% 19.7% −48.776*** −0.402 16.2% 14.3%
 PDE SS −45.876*** −0.443 19.7% 17.9% −46.685*** −0.327 10.7% 8.7%
 WID-WRMT SS −45.934*** −0.566 32.0% 30.5% −52.214*** −0.466 21.7% 19.9%
 WA-WRMT SS −48.852*** −0.486 23.7% 22.0% −49.119*** −0.354 12.5% 10.6%
 PC SS −37.555*** −0.538 28.9% 27.4% −44.481*** −0.461 21.3% 19.5%
Children in Test Set (controlling for ages)
 Composite −2.170* 0.781 30.7% a 23.4% a −2.195 1.159 18.0% a 9.4% a
 WID-WJ SS −25.995 13.024 16.9% a 9.0% a −26.353 18.493 9.8% a 1.2% a
 WA-WJ SS −25.363* 9.397 26.8% a 19.4% a −27.019 13.645 16.5% a 8.1% a
 SWE SS −29.905 14.796 21.4% a 14.3% a −33.848 20.184 17.4% a 9.9% a
 PDE SS −37.849* 13.859 30.7% a 24.4% a −44.380* 19.124 25.4% a 18.6% a

Note.

***:

p-value <.001.

**:

p-value <.01.

*:

p-value <.05.

p < .10.

SS: standard score.

a:

estimated R2 including age effects.