Table 2

Association between age at school entry and Hyperactivity-Inattention Subscale score (multivariable linear regression for correlated outcomes; n=2671)

Hyperactivity-Inattention Subscale score derived from the Strengths and Difficulties Questionnaire
SetSecond gradeFourth grade
Parent reportsTeacher reportsParent reportsTeacher reports
βSEP valuesβSEP valuesβSEP valuesβSEP values
1−0.220.140.1245−0.660.190.0006−0.090.130.4847−0.560.170.0014
2−0.240.140.0874−0.680.190.0004−0.100.130.4251−0.580.170.0009
3−0.270.140.0662−0.730.180.0001−0.100.130.4103−0.570.170.0013
  • Set 1: adjusted for gender.

  • Set 2: adjusted for set one plus birth status, family form, CASMIN score, and migrant background.

  • Set 3: adjusted for set two plus parent-reported Hyperactivity-Inattention Subscale score at baseline.