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Table 4 Relationship between smartphone addiction and smoking, depression, insomnia, and ADHD symptoms

From: Smartphone addiction and associated factors among postgraduate students in an Arabic sample: a cross-sectional study

  Smartphone addiction No smartphone addiction P-value
Number % Number % 0.039*
Smoking
 Yes 22 8.4 31 12.4  
 Low independence 7 2.7 20 8.0
 Low to moderate independence 6 2.3 4 1.6
 Moderate independence 7 2.7 6 2.4
 High independence 2 .8 1 .4
 No smoking 239 91.6 220 87.6
Depression
 Moderate depression 20 7.7 20 8.0 0.013*
 Moderately severe depression 42 16.1 11 4.4
 Severe depression 27 10.3 15 6.0
 No depression 172 65.9 205 81.7
Insomnia
 insomnia 151 65.7 99 44.4 < 0.001*
 No insomnia 79 34.3 124 55.6  
ADHD symptoms
 Have ADHD symptoms 110 47.8 44 19.7 < 0.001*
 Have no ADHD symptoms 120 52.2 179 80.3