Table 3 Analysis of variance of the three groups of participants regarding free-time activities, life satisfaction, mental health, parent-child relationship and self-control

 Time spent with friends

3.94 (0.95)

3.84 (0.92)

3.78 (1.32)

1.126

0.325

 Watch TV

2.96 (1.06)

3.10 (0.96)

3.39 (1.13)

3.792

0.023

 Play video games on computer/tablet/phone

1.02 (0.72)

3.12 (1.08)

4.27 (0.87)

112.456

< 0.001

c > b > a

 Engage in social media

3.30 (1.34)

3.25 (1.25)

3.69 (1.38)

2.620

0.073

 Read books

2.50 (1.39)

2.38 (1.12)

2.03 (1.19)

3.134

0.044

 Attend a music school or a choir

2.19 (1.67)

1.78 (1.39)

2.10 (1.62)

6.603

0.001

a > b

 Sports activities

3.61 (1.30)

3.80 (1.19)

3.80 (1.20)

1.863

0.156

Perceived life satisfaction

7.69 (2.25)

8.07 (1.99)

7.29 (3.07)

4.842

0.008

Perceived mental health

3.76 (1.11)

3.94 (1.04)

3.71 (1.55)

2.774

0.063

 sum of all parent-child items

15.56 (3.81)

15.63 (3.46)

14.07 (4.39)

4.199

0.015

 and I try to spend much time together

3.75 (1.09)

3.81 (1.02)

3.49 (1.33)

2.244

0.107

 always treat me with love and affection

3.61 (1.17)

3.64 (1.16)

3.29 (1.29)

1.949

0.143

 and I have frequent conversations

4.07 (1.05)

3.98 (1.01)

3.60 (1.37)

3.796

0.023

 and I understand each other well

4.11 (1.05)

4.21 (0.99)

3.72 (1.32)

5.648

0.004

b > c

Overall self-control level

18.25 (6.15)

18.56 (5.94)

25.49 (8.33)

28.496

< 0.001

a > c, b > c