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. 2016 Jun 3;4:162–168. doi: 10.1016/j.pmedr.2016.05.013

Table 3.

Media device ownership and media use: associations with daily sedentary time (Linear Model1) and with high sedentary time (Logistic Model2).

 Boys
 Girls
Media device ownership or media use β (95%CI) p-Value Media device ownership or media use β (95%CI) p-Value
Linear Model1
Games console 170.1a (75.1–266) < 0.001 Social media (min·day− 1) 1.51a (0.79–1.68) < 0.001
Social media (min·day− 1) 0.83a (0.22–1.44) 0.008 Active game console 85.4a (38.6–132) < 0.001
Desktop computer 50.9b (− 3.65–105.0) 0.067 Smart phone − 76.6a (− 124 to − 28.7) 0.002
– – Blu-Ray/DVD player − 49.8a (− 90.7 to − 4.94) 0.030
Passive school travel 42.2 (− 11.4 to 95.8) 0.122 Passive school travel 31.3 (− 13.5–75.7) 0.167
Age 10.6 (− 10.9 to 32.2) 0.333 Age (years) 29.5a (12.4–46.6) 0.001
Deprivation (EID) − 1.70 (− 7.16 to 3.76) 0.540 Deprivation (EID) − 3.68 (− 12.4 to − 46.6) 0.136



OR (95%CI) p-Value Media device ownership or media use OR (95%CI) p-Value
Logistic Model2
Game console 5.32a (1.97–14.4) < 0.001 Social media (min·day− 1) 1.02a (1.01–1.03) < 0.001
Social media (min·day− 1) 1.004 (0.998–1.01) 0.155 Active games console 1.72b (0.91–3.25) 0.096
Desktop computer 1.64b (0.99–2.72) 0.057 Smart phone 0.76 (0.40–1.45) 0.145
Blu-Ray/DVD player 0.48 (0.26–0.90) 0.021
Passive school travel 1.62a (1.00 to 2.65) 0.050 Passive school travel 2.84a (1.49–5.43) 0.002
Age 1.14 (0.93 to 1.41) 0.206 Age (years) 1.18 (0.94–1.50) 0.146
Deprivation (EID) 0.96 (0.92 to 1.01) 0.144 Deprivation (EID) 0.96 (0.90–1.04) 0.365

Legend: EID — English Indices of Deprivation; OR — Odd Ratios, CI — Confidence Intervals; β — coefficients are unstandardized. Model1 — all variables were statistically significant, non-collinear (Variance Inflation Factor < 2.5) predictors of mean daily (weekday and weekend) sedentary time (min·day− 1) were identified using linear regression (Model1). Coefficients are for mixed linear regression analysis (Enter) with forced entry of: Passive school transport, Age and Deprivation. Model2 — Mixed logistic regression (Enter Method) predicting high sedentary time (sex-specific median splits); Referent category — low sedentary time. Initial variables entered on the basis of statistical significance and non-collinearity in Model1; Predictors reported as OR (95%CI). All ORs are mutually adjusted for; one another, Passive school transport, Age and Deprivation. All data collected in summer term (May–June) 2014 at n = 6 schools, Essex, UK.

a

Statistically significant predictor of high sedentary time.

b

Borderline statistical significance but likely important predictor based on OR and 95%Confidence Intervals.