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. Author manuscript; available in PMC: 2009 Dec 23.
Published in final edited form as: Psychol Med. 2009 Apr 1;39(11):1895–1906. doi: 10.1017/S0033291709005510

Table 3.

Educational and academic outcomes by level of hyperactivity-inattention symptoms

HI-s>=90th centile group (N=163) HI-s<90th centile group (N=1101) p
Performance in academic subjects, Mean (SD)
- Reading, French, or language arts 5.8 (2.9) 7.4 (2.6) <0.0001
- Arithmetic or math 5.9 (3.0) 7.7 (2.7) <0.0001
- Sciences 6.3 (2.6) 7.7 (2.5) <0.0001
- Foreign languages 5.4 (3.3) 7.4 (2.8) <0.0001
- Global results 5.9 (2.1) 7.6 (2.0) <0.0001
Grade retention 72% 35% <0.0001
Youths’ situation at follow-up
- Secondary school 37% 46% 0.0432
- Technical or professional training 18% 8% 0.0002
- College or university 13% 26% 0.0008
- Employed 13% 11% 0.4113
- Job seeker 8% 3% 0.0059
- Other situation 11% 6% 0.0348
In older than 18, (N=762)
- Secondary school graduation exam 55% 76% <0.0001
- Educational achievement 32% 63% <0.0001

Performance in academic subjects: Each academic subject performance varied from 0 to 10

Educational achievement: Secondary school graduation exam in general education setting or post secondary/university diploma versus no diploma or technical/professional diploma