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. Author manuscript; available in PMC: 2014 Mar 19.
Published in final edited form as: J Learn Disabil. 2010 May 12;43(4):332–345. doi: 10.1177/0022219410369067

Table 6.

Predictors, Cp values, and AUC values for eighth grade best and near best models

Model # Predictors Cp AUC
1 PD, GC, NI, SI, ME, 4.033 .862
2 PD, GC, NI, RN, SI 5.925 .857
3 PD, SI, NI, RN, ME, 4.801 .855
4 PD, GC, NI, SI, ME, NE 5.356 .865
5 PD, GC, NI, SI, ME, NE, NC, OV 8.735 .868

Note. PD = Phoneme deletion; GC = Grammatical completion; NI = Nonverbal IQ; SI = Sentence imitation; ME = Mother’s education level; RN = Rapid naming; OV = Oral vocabulary; NE = Narrative expression; NC = Narrative comprehension. Predictors are listed in order of the absolute value of β, as determined by the bootstrapping procedure (see Table 7).