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. 2021 Feb 4;4(1):e20172. doi: 10.2196/20172

Table 2.

McDonald ω coefficients for the web-based and paper versions of the ASSQ, ADHD-RS, DCDQ, and P-SDQ (N=140).

Scale and subscales McDonald ω


Web-based Paper
Autism Spectrum Screening Questionnaire .90 .86a
Attention-Deficit/Hyperactivity Disorder Rating Scale


Total .94 .93b

Inattention .90 .88c

Hyperactivity/Impulsivity .88 .87c
Developmental Coordination Disorder Questionnaire


Total .94 .92a

Control During Movement .87 .86a

Fine Motor/Handwriting .88 .91d

General Coordination .82 .74
Parent-rated Strength and Difficulties Questionnaire


Total Difficulties .81 .78

Emotional Symptoms .64 .70

Conduct Problems .55 .50

Hyperactivity/Inattention .78 .79

Peer Relationship Problems .57 .52

Prosocial Behavior .76 .80

aCalculated for 137 participants because of missing data.

bCalculated for 133 participants because of missing data.

cCalculated for 134 participants because of missing data.

dCalculated for 139 participants because of missing data.