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Table 2 Association of all electronic devices and social network use with sleep time

From: Electronic device and social network use and sleep outcomes among adolescents: the EHDLA study

Sleep duration

 

R²

B (95% CI)

β

p

Model 1

0.11

   

Cellphone use (time)

 

-16.49 (-21.47, -14.70)

-0.336

< 0.001

Model 2

0.20

   

Cellphone use (time)

 

-14.56 (-17.94, -11.22)

-0.306

< 0.001

Age (years)

 

-7.68 (-10.17, -5.20)

-0.211

< 0.001

Organized sports participation (Ref. No)

    

Yes

 

9.12 (1.01, 17.23)

0.076

0.028

SDQ (Ref. Normal)

    

Borderline

 

-15.68 (-22.89, -0.40)

-0.010

0.006

Abnormal

 

-21.28 (-31.37, -8.98)

-0.129

< 0.001

Model 3

0.01

   

Computer use (time)

 

-5.07 (-7.79, -2.34)

-0.110

< 0.001

Model 4

0.12

   

Computer use (time)

 

-4.80 (-7.95, -1.64)

-0.107

0.003

Age (years)

 

-8.95 (-11.52, -6.38)

-0.248

< 0.001

Organized sports participation (Ref. No)

    

Yes

 

10.86 (2.41, 19.30)

0.092

0.012

SDQ (Ref. Normal)

    

Borderline

 

-18.74 (-30.33, -7.15)

-0.115

0.002

Abnormal

 

-23.87 (-35.54, -12.21)

-0.146

< 0.001

Diet (Ref. Optimal MD)

    

Nonoptimal MD

 

-8.54 (-16.60, -0.45)

-0.075

0.039

Model 5

0.05

   

Instagram use (time)

 

-9.70 (-12,77, -6.63)

-0.230

< 0.001

Model 6

0.13

   

Instagram use (time)

 

-6.03 (-9.15, -2.96)

-0.145

< 0.001

Age (years)

 

-7.85 (-10.51, -5.19)

-0.220

< 0.001

Organized sports participation (Ref. No)

    

Yes

 

10.80 (2.34, 19.23)

0.092

0.012

SDQ (Ref. Normal)

    

Borderline

 

-14.70 (-26.42: -2.98)

-0.090

0.014

Abnormal

 

-20.46 (-32.18: -8.75)

-0.126

0.001

Diet (Ref. Optimal MD)

    

Nonoptimal MD

 

-9.11 (-17.16, -1.06)

-0.081

0.027

Model 7

0.02

   

WhatsApp use (time)

 

-6.65 (-10.38, -2.91)

-0.131

0.001

Model 8

0.13

   

WhatsApp use (time)

 

-5.60 (-9.19, -2.01)

-0.112

0.002

Age (years)

 

-8.76 (-11.36, -6.17)

-0.245

< 0.001

Organized sports participation (Ref. No)

    

Yes

 

10.80 (2.32, 19.27)

0.092

0.013

SDQ (Ref. Normal)

    

Borderline

 

-17.30 (-18.23, -5.58)

-0.106

0.004

Abnormal

 

-23.76 (-35.43, -12.10)

-0.146

< 0.001

Diet (Ref. Optimal MD)

    

Nonoptimal MD

 

-10.26 (-18.31, -2.21)

-0.091

0.013

  1. MD: Mediterranean diet; SDQ: Strengths and Difficulties Questionnaire. Data are expressed as nonstandardized beta values with their 95% confidence intervals, standardized beta values, and p values.