Table 4 Principal components analysis of the hyperactivity-impulsivity symptoms of ADHD DSM-V Checklist

ADHD- item10- fidgets with hands

.566

.123

ADHD- item11- leaves seat in classroom

.666

.214

ADHD- item 12- runs about

.629

.225

ADHD- item 13- playing or leisure activities

.834

.111

ADHD- item 14- often "on the go"

.771

.157

ADHD- item 15- talks excessively

.753

.154

ADHD- item 16- blurts out answers

.682

.112

ADHD- item 17- awaiting turn

.574

.396

ADHD- item 18- interrupts or intrudes on others

.717

.132

ADHD- item 19- act without thinking

.207

.496

ADHD- item 20- impatient

.208

.794

ADHD- item 21- uncomfortable doing things slowly and systematically

.187

.755

ADHD- item 22- difficult to resist temptations or opportunities

.022

.781