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Table 1 Demographic characteristics of the subjects (n = 4512)

From: The relationship between smartphone addiction and symptoms of depression, anxiety, and attention-deficit/hyperactivity in South Korean adolescents

 

n

%

Age (mean ± SD)

15.15 ± 1.62

Sex

 

 Male

2034

45.1

 Female

2478

54.9

Grade year

 7th

891

19.7

 8th

994

22

 9th

689

15.3

 10th

749

16.6

 11th

776

17.2

 12th

413

9.2

SES

 High

1219

27

 Middle

2551

56.5

 Low

742

16.4

Family structure

 Both parents

3939

87.3

 Single parent

491

10.9

 Other

82

1.8

  1. SD standard deviation, SES socio-economic status
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Annals of General Psychiatry

ISSN: 1744-859X