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. Author manuscript; available in PMC: 2009 Sep 29.
Published in final edited form as: J Abnorm Child Psychol. 2004 Jun;32(3):273–284. doi: 10.1023/b:jacp.0000026141.20174.17

Table I.

Means and Standard Deviation for Intervention and Control Participants

Variable Intervention group Control group
IQ 8.45/2.63 8.38/2.41
Externalizing problems 0.91/0.75 0.90/0.75
Kindergarten reading achievement 0.05/1.03 −0.05/0.97
1st grade reading* achievement 0.15/0.73 −0.14/0.97
K indergarten attention problems* 1.81/0.90 1.43/0.91
1st grade attention problems 1.55/0.86 1.59/0.94

Note. Entries for reading achievement and externalizing problems are standard scores. IQ is scaled score where a score of 10 represents the 50th percentile. Attention problems score reflect average score on a 0–3 scale with higher scores reflecting more inattentive behavior.

*

Significant intervention versus control differences were indicated at p < .05.