Table. 3.

Table. 3.

Smart usage environment

Variable Category N %
Smartphone where to use (duplicate response) Home/dormitory 206 45.8
Library 21 4.7
Classroom 78 17.3
Restaurant 40 8.9
Public transportation 104 23.1
Etc. 1 0.2
Smartphone posture of use (duplicate response) Sit down 159 35.9
Lie down 157 35.4
Standing 82 18.5
Lying down 45 10.2
Smartphone purpose of use (duplicate response) Search 115 17.3
Game 82 12.3
Document work 33 5.0
Instagram, YouTube, Facebook 191 28.7
Phone call 107 16.1
Music, movies 135 20.3
Etc. 2 0.3
Smartphone average usage time <1 h 4 1.9
≤1 h, <2 h 12 5.7
≤2 h, <3 h 42 20.1
≤3 h, <4 h 42 20.1
≤4 h 108 51.7
Etc. 1 0.5
Int J Clin Prev Dent 2024;20:175-80 https://doi.org/10.15236/ijcpd.2024.20.4.175
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