Skip to main content

Table 2 Comparisons of smartphone use features between undergraduates with and without PSU

From: Prevalence and correlates of problematic smartphone use in a large random sample of Chinese undergraduates

Smartphone use features

Non-PSU: \( \overline{\mathrm{X}} \) ±SD; n (%)

PSU: \( \overline{\mathrm{X}} \) ±SD; n(%)

Multiple comparisons

Test value: Z; X2

p

Age for first mobile phone

16.00 ± 2.286

16.16 ± 2.092

-

0.743

0.458

Number of mobile phones

  

-

3.896

0.048

 1

655 (78.3)

163 (72.1)

   

 2 or more

181 (21.7)

63 (27.9)

   

Daily use time, hours

   

23.582

<0.001

  ≤ 2 (1)

226 (27)

41 (19.9)

1–2

0.213

0.644

 2–4 (2)

319 (38.2)

64 (27.7)

1–3

17.512

<0.001

  ≥ 4 (3)

291 (34.8)

121 (52.4)

2–3

17.813

<0.001

Operating system

   

2.074

0.355

 IOS (Apple)

171 (21)

45 (20.1)

   

 Android (Google)

645 (79)

179 (79.9)

   

 Other

20

2

-

-

-

Frequency of mobile phone change

   

19.291

<0.001

 Not changed yet

87

21

-

-

-

  ≤ 1 year (1)

117 (15.6)

56 (27.3)

1–2

8.779

0.003

 1–2 years (2)

411 (54.9)

111 (54.2)

1–3

19.083

<0.001

  ≥ 2 years (3)

221 (29.5)

38 (18.5)

2–3

4.837

0.027

Monthly smartphone bill

   

13.137

0.001

  ≤ 50 RMB (1)

424 (50.7)

89 (39.4)

1–2

5.907

0.015

 50–100 RMB (2)

363 (43.4)

112 (49.5)

1–3

11.162

0.001

  ≥ 100 RMB (3)

49 (5.9)

25 (11.1)

2–3

3.560

0.059

Total

836

226

   
  1. PSU problematic smartphone use