Appendix C

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 9. On-Diet vs Off-Diet Comparison on Various Outcomes

Outcome N M d 95% Confidence Interval
IQ

34

0.3045

0.1466 to 0.4624

FSIQ

26

0.2737

0.0735 to 0.4739

Attention

8

0.5202

-0.2441 to 1.2845

Sustained and selective

7

0.7717

0.2649 to 1.2786

Behavior

5

0.2412

-0.1590 to 0.6413

Other cognitive and motor skills

33

0.2123

0.0065 to 0.4181

Speed of processing

25

0.3673

0.1949 to 0.5397

Note. N=number of effect sizes. A positive effect size reflects poorer cognitive and behavioral outcomes for those PKU individuals who terminated diet as compared to those PKU individuals who are currently on diet.

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