Table 3.
Associations of total and device-specific screen viewing (hours per day) with sleep duration (hours per day) among all participants
| All participants (n = 714) |
β (95%CI) | P valuec | β (95%CI) | P for trendd | |||
|---|---|---|---|---|---|---|---|
| SV | 0 h (n = 335) | < 1 h (n = 147) | 1–2 h (n = 116) | ≥ 2 h (n = 116) | Per Hour | ||
| Model 1a | Ref | −2.03 (− 2.65,-1.41) | − 2.73 (− 3.41,-2.06) | −3.11 (− 3.78,-2.43) | < 0.01 | − 0.54 (− 0.68,-0.39) | < 0.01 |
| Model 2b | Ref | − 1.01 (− 1.63,-0.40) | − 1.42 (− 2.10,-0.73) | −1.73 (− 2.43,-1.02) | < 0.01 | − 0.26 (− 0.40,-0.12) | < 0.01 |
| TV | 0 h (n = 398) | < 1 h (n = 158) | 1–2 h (n = 77) | ≥ 2 h (n = 81) | Per Hour | ||
| Model 1a | Ref | −1.84 (− 2.44,-1.23) | −2.41 (− 3.21,-1.61) | −2.58 (− 3.37,-1.80) | < 0.01 | − 0.69 (− 0.92,-0.46) | < 0.01 |
| Model 2b | Ref | −0.78 (− 1.37,-0.20) | −1.27 (− 2.05,-0.48) | −1.32 (− 2.08,-0.56) | < 0.01 | − 0.28 (− 0.50,-0.06) | 0.01 |
| Mobile devices | 0 h (n = 499) | < 1 h (n = 141) | 1–2 h (n = 47) | ≥ 2 h (n = 27) | Per Hour | ||
| Model 1a | Ref | −1.94 (− 2.57,-1.32) | −2.43 (− 3.43,-1.44) | −2.19 (− 3.48,-0.90) | < 0.01 | −0.69 (− 0.97,-0.41) | < 0.01 |
| Model 2b | Ref | −0.85(− 1.45,-0.25) | −0.95 (− 1.90,-0.01) | −1.10 (− 2.32,0.11) | 0.01 | −0.35 (− 0.61,-0.09) | 0.01 |
aUnadjusted model
bMultivariable model adjusted for children’s age race, sex, mother’s education, father’s education, marital status, caregiver, housing type
cOverall effect of categorical screen viewing variables; d Trend of association using continuous screen viewing variables