Appendix B

The content in this publication was current at the time it was published, but it is not being updated. The publication is provided for historical purposes only.

Table 11. Summary of Stepwise Regression for PKUCS Adult WRAT-III Scores

(Possible predictors include: Age first treated, Parent IQ, Father's Education, Years on Diet, and Phe Levels at Diagnosis, 6 years, 10 years and Currently)

Dependent Variable WRAT-III READING

Step	Variable Entered	Number In	Partial R**2	Model R**2	F to Enter	Prob>F
1	Parent IQ	1	0.2246	0.2246	13.3265	0.0007
2	Phe @ 6 yrs	2	0.0625	0.2871	3.9465	0.0531
3	Age 1st Treated	3	0.0346	0.3218	2.2458	0.1411
4	Father's Ed	4	0.0338	0.3556	2.2586	0.1402

Dependent Variable WRAT-III SPELLING

Step	Variable Entered	Number In	Partial R**2	Model R**2	F to Enter	Prob>F
1	Parent IQ	1	0.2990	0.2990	19.6229	0.0001
2	Phe @ 6 yrs	2	0.0931	0.3921	6.8930	0.0118
3	Age 1st Treated	3	0.0321	0.4243	2.4570	0.1242
4	Father's Ed	4	0.0382	0.4625	3.0538	0.0877

Dependent Variable WRAT-III ARITHMETIC

Step	Variable Entered	Number In	Partial R**2	Model R**2	F to Enter	Prob>F
1	Parent IQ	1	0.3326	0.3326	22.9214	0.0001
2	Phe @ 6 yrs	2	0.0382	0.3707	2.7292	0.1055

Back to Appendix B Figures and Tables

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