Table 4. Prevalence of Specifically Poor Comprehenders (Lowest 25% with at least 1SD Discrepancy with Decoding) As a Function of Age and Whether Decoding is Defined by Word Reading or Nonword Reading.

Comprehension Test	Full Sample		Young Mean = 9.5 yrs		Older Mean = 13.9 yrs
	Word	Nonword	Word	Nonword	Word	Nonword
Reading Comprehension Composite	5%	8%	3%	6%	6%	10%
RC-D Composite	2.5%	6%	1%	4%	4%	9%
RC-C Composite	8%	11%	7%	9%	9%	13%
Listening Comprehension Composite	10%	12%	11%	13%	9%	11%