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Table 3 Multiple linear regression: comorbid diagnoses, gender and age as predictors of ADHD symptoms among children and adolescents

From: Symptoms and level of functioning related to comorbidity in children and adolescents with ADHD: a cross-sectional registry study

  SNAP-T
n = 855
SNAP-I
n = 1151
SNAP-H
n = 1128
B (95% CI) SE B p B (95% CI) SE B p B (95% CI) SE B p
Constant 2.29 (2.09–2.50) .105 < .001 2.18 (1.99–2.36) .09 < .001 2.57 (2.35–2.78) 11 < .001
ASD .13 (.03–.23) .05 .009 .21 (.13–.30) .04 < .001 .12 (.03–.22) .05 .013
Anxiety .18 (− .02 to .37) .10 .076 .17 (− .04 to .37) .10 .107 .24 (− .01 to .48) .12 .055
ODD/CD .27 (.10–.45) .09 .003 .07 (− .12 to .26) .10 .465 .16 (− .06 to .38) .11 .151
Learning disorder − .18 (− .44 to .09) .13 .186 − .21 (− .45 to .02) .12 .078 − .16 (− .44 to .12) .14 .254
Tic disorder .35 (.03–.67) .16 .030 .11 (− .18 to .40) .15 .447 − .11 (− .44 to .22) .17 .512
Affective disorder .08 (− .26 to .42) .17 .635 .11 (− .22 to .44) .17 .506 .01 (− .37 to .44) .20 .943
Multiple disorders .35 (.22–.48) .06 < .000 .35 (.22–.48) .07 < .001 .34 (.19–.49) .08 < .001
Age (years) − .07 (− .08 to − .05) .01 < .001 − .04 (− .05 to − 02) .01 < .001 − .10 (− .12 to − .08) .01 < .001
Gender − .02 (− .11 to .07) .05 .653 − .09 (− .17 to − .01) .04 .031 .01 (− .09 to .11) .05 .880
  Adj. R2 = 114    Adj. R2 = .057    Adj.R2 = .135   
  1. SNAP-IV the Swanson, Nolan, and Pelham Questionnaire, SNAP-T total scale, SNAP-I inattention subscale, SNAP-H hyperactivity/impulsivity subscale, B unstandardized coefficient, CI confidence interval, SE standard error, β standardized beta coefficient, ASD autism spectrum disorder, ODD oppositional defiant disorder, CD conduct disorder