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Table 4 Subgroup analysis for the odds of overweight/ obesity in highest versus lowest screen-user adolescents

From: Screen time increases overweight and obesity risk among adolescents: a systematic review and dose-response meta-analysis

Group

No. of studies*

OR (95% CI)

P within group

P between group *

P heterogeneity

I2, %

Total

44

1.273 1.166 1.390

< 0.001

 

< 0.001

82.1

Continent

   

< 0.001

  

 America

11

1.115 1.002 1.241

0.046

 

0.083

39.9

 Europe

10

1.080 0.966 1.208

0.276

 

0.002

66.2

 Asia

11

2.014 1.450 2.798

< 0.001

 

< 0.001

90.9

 Oceania

8

1.099 0.927 1.304

0.278

 

0.056

49.1

 Africa

4

1.646 1.018 2.660

0.042

 

< 0.001

86.9

Screen type

   

< 0.001

  

 TV

16

1.813 1.420 2.315

< 0.001

 

< 0.001

86.7

 PC

3

1.467 0.950 2.265

0.509

 

0.159

45.7

 VG

5

1.114 0.808 1.536

0.084

 

0.014

67.9

 TV + VG

5

1.094 0.959 1.248

0.184

 

0.107

47.5

 VG + PC

2

1.106 1.030 1.187

0.005

 

0.612

0

 TV + VG + PC

13

1.068 0.974 1.172

0.163

 

0.002

60.7

Age group

   

< 0.001

  

  < 15

23

1.375 1.131 1.672

0.001

 

< 0.001

81.9

  ≥ 15

6

1.470 1.076 2.008

0.016

 

< 0.001

82.8

 Both

15

1.126 1.032 1.228

0.008

 

< 0.001

76.4

Setting

   

< 0.001

  

 School

31

1.405 1.228 1.608

< 0.001

 

< 0.001

86.6

 Community

13

1.109 1.040 1.182

0.002

 

0.229

21.2

Obesity status

   

< 0.001

  

 Obesity

11

1.109 0.964 1.275

0.150

 

0.001

67.0

 Overweight

9

1.567 1.282 1.916

< 0.001

 

< 0.001

84.1

 Overweight/ obesity

24

1.271 1.105 1.463

0.001

 

< 0.001

87

Sample size

   

< 0.001

  

 1000 >

11

2.024 1.303 3.144

0.002

 

< 0.001

90.9

 1000–5000

27

1.121 1.049 1.198

0.001

 

< 0.001

59.9

  ≥ 5000

6

1.323 1.017 1.722

0.037

 

0.001

75.7

Study quality *

   

< 0.001

  

 Low

0

–

 

–

–

–

 Moderate

31

1.259 1.085 1.461

< 0.001

 

< 0.001

80.3

 High

13

1.282 1.146 1.435

0.002

 

< 0.001

84.4

Adjusted covariates

   

< 0.001

  

 Age, sex, nationality, SES

7

1.239 1.116 1.377

< 0.001

 

0.586

0

 Age, sex, nationality, SES, other demographic variables

14

1.454 1.251 1.690

< 0.001

 

< 0.001

87.3

 Age, sex, nationality, SES, other demographic variables, dietary habits

23

1.091 0.982 1.212

0.107

 

< 0.001

64.8

  1. *low quality = 0–3; moderate quality = 4–7; high quality ≥8; all of the included studies were in moderate quality group therefore, subgrouping was not performed