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. Author manuscript; available in PMC: 2007 Sep 21.
Published in final edited form as: J Prosthet Dent. 2007 Aug;98(2):101–109. doi: 10.1016/S0022-3913(07)60043-2

Table III.

Test of fixed effects for areas under ROC curves

Effect Numerator DF Denominator DF F P
Formula 2 75 7.55 .001
Question 1 75 27.08 <.001
Formula × question 2 75 0.02 .979