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. 2019 Jul 27;5(7):e02158. doi: 10.1016/j.heliyon.2019.e02158

Table 2.

Mean scores for problematic smartphone use or degree of attachment to Smartphone in Koreans and Australians. Standard deviations are in parentheses.

Items Koreans Australians F value p value ɳp2
1. Missing planned work due to smartphone use 3.12 (1.37) 2.52 (1.49) 14.38 <.001 .037
2. Having a hard time concentrating in class, while doing assignments, or while working due to smartphone use 3.13 (1.32) 3.23 (1.56) .37 .544 .001
3. Feeling pain in the wrists or at the back of the neck while using a smartphone 2.82 (1.62) 2.45 (1.41) 5.15 .024 .013
4. Won't be able to stand not having a smartphone 4.07 (1.49) 3.44 (1.66) 12.68 <.001 .032
5. Feeling impatient and fretful when I am not holding my smartphone 2.82 (1.36) 2.49 (1.41) 4.47 .035 .012
6. Having my smartphone in my mind even when I am not using it 2.61 (1.27) 2.36 (1.25) 3.22 .074 .008
7. I will never give up using my smartphone even when my daily life is already greatly affected by it. 3.21 (1.44) 2.59 (1.38) 15.97 <.001 .041
8. Constantly checking my smartphone so as not to miss conversations between other people on Twitter or Facebook 3.07 (1.44) 2.76 (1.49) 3.84 .051 .010
9. Using my smartphone longer than I had intended 4.06 (1.27) 4.36 (1.30) 4.47 .035 .012
10. The people around me tell me that I use my smartphone too much. 2.85 (1.52) 2.42 (1.45) 7.18 .008 .019
Total (Overall) 31.62 (9.69) 28.61 (9.32) 9.16 .003 .024