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Table 1 Means, Standard Deviations, and t-Tests for Age, IQ, and Questionnaire Scores

From: Moment-to-moment dynamics of ADHD behaviour

Groups
Measure ADHD group
N = 15
Normal controls
N = 13
Group Comparison f
  Mean SD Mean SD  
Age yr:mo (SD in mo) 7:6 9,5 7:10 9,4 p > .282, n.s.
- range yr : mo 6:2 – 8:9 6:4 – 9:0  
IQ Full scale WISC-R 104.5a 10.5 114.5 12.5 p < .04
DBRSc Teacher      
- inattention items 16.1 6.5 3.0 2.5 p < .001
- hyperactive/impulsive 18.4 8.0 2.0 2.5 p < .001
DBRSc Parents      
- inattention items 16.7 6.0 4.1 2.1 p < .001
- hyperactive/impulsive 17.4 4.4 3.0 2.7 p < .001
CBCL d      
- externalised T-score 68.2 8.9 38.9 7.5 p < .001
- internalised T-score 57.2 9.5 40.0 5.7 p < .001
- attention factor T-score 63.8 9.9 51.1 2.1 p < .001
TRF e      
- externalised T-score 69.5b 10.9 46.1 6.8 p < .001
- internalised T-score 57.5b 9.5 45.0 7.2 p < .001
- attention factor T-score 60.5b 6.5 50.4 1.0 p < .001
  1. aOne case missing
  2. bTwo cases missing
  3. cDisruptive Behaviour Rating Scale [16]
  4. dChild Behaviour Checklist – parent form [30].
  5. eTeacher Report Form [30].
  6. fTwo-tailed t-test for equality of means. Bonferroni adjustment of the p-level is set to p = .039. Results are highlighted after Bonferroni adjustment