TABLE 3.
Mean screen time according to device and mother/child characteristics for 6‐ to 7‐year follow‐up.
| Total time a | TV | Other screens | Total other screens b | ||||
|---|---|---|---|---|---|---|---|
| Smartphone | Tablet/iPad | Computer | Videogame | ||||
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |
| 6–7 years | 333.8 (209.1) | 173.0 (140.8) | 131.0 (137.2) | 16.2 (61.7) | 8.0 (44.4) | 8.9 (36.6) | 163.9 (161.4) |
| Sex | p < 0.001 | p < 0.001 | p = 0.01 | p = 0.55 | p = 0.002 | p < 0.001 | p < 0.001 |
| Female | 309.1 (198.3) | 162.6 (134.4) | 125.3 (128.6) | 15.6 (60.3) | 5.7 (36.0) | 2.3 (16.9) | 148.7 (148.6) |
| Male | 358.0 (216.5) | 183.2 (146.2) | 136.7 (144.9) | 16.7 (63.0) | 10.2 (51.1) | 15.4 (47.9) | 178.8 (171.7) |
| Ethnicity | p = 0.23 | p = 0.02 | p = 0.24 | p = 0.32 | p = 0.30 | p = 0.004 | p = 0.95 |
| Black | 350.4 (220.4) | 191.7 (155.8) | 136.1 (142.2) | 12.0 (52.5) | 9.8 (55.4) | 5.3 (28.7) | 162.8 (171.3) |
| White | 332.4 (201.8) | 170.4 (136.7) | 129.9 (134.4) | 16.9 (60.6) | 8.5 (44.5) | 10.3 (39.8) | 165.4 (158.0) |
| Brown | 341.0 (228.4) | 177.5 (144.0) | 139.5 (147.3) | 15.0 (70.5) | 5.8 (40.6) | 6.0 (26.8) | 166.0 (173.6) |
| Family income | p < 0.001 | p < 0.001 | p < 0.001 | p < 0.001 | p = 0.005 | p < 0.001 | p = 0.002 |
| ≤ 1 | 310.9 (219.2) | 163.5 (146.9) | 128.5 (151.9) | 13.7 (67.2) | 5.8 (47.6) | 2.8 (22.0) | 150.5 (168.1) |
| 1.1–3.0 | 351.6 (216.6) | 184.1 (149.8) | 144.1 (143.8) | 12.0 (55.4) | 6.0 (39.5) | 7.6 (35.1) | 169.7 (162.6) |
| 3.1–6.0 | 341.7 (198.7) | 170.2 (132.7) | 133.3 (129.2) | 18.5 (62.4) | 12.2 (50.5) | 10.5 (37.0) | 174.3 (159.4) |
| 6.1–10.0 | 295.2 (180.7) | 155.2 (107.8) | 100.9 (115.1) | 29.5 (79.7) | 5.1 (27.7) | 14.7 (52.4) | 150.1 (161.9) |
| > 10.0 | 275.8 (173.7) | 138.6 (110.7) | 81.7 (93.1) | 29.3 (67.4) | 9.3 (40.1) | 17.3 (47.1) | 137.2 (136.2) |
| Maternal education (years) | p = 0.002 | p = 0.07 | p < 0.001 | p < 0.001 | p = 0.01 | p < 0.001 | p = 0.04 |
| 0–4 | 325.2 (226.9) | 166.4 (155.1) | 136.1 (157.3) | 10.8 (57.7) | 10.6 (65.6) | 4.9 (33.3) | 162.4 (183.1) |
| 5–8 | 331.7 (215.3) | 178.1 (151.8) | 135.6 (145.2) | 9.4 (49.0) | 4.8 (30.2) | 5.5 (28.1) | 155.2 (155.3) |
| 9–11 | 350.1 (210.6) | 177.7 (141.5) | 143.2 (136.1) | 14.8 (63.0) | 7.3 (45.4) | 8.3 (36.5) | 173.5 (159.1) |
| ≥ 12 | 319.4 (195.1) | 165.4 (125.1) | 111.4 (122.0) | 25.2 (69.5) | 10.7 (45.6) | 13.6 (43.2) | 160.8 (161.9) |
Note: Bolded p‐values are considered significant (< 0.05).
a
Total time: TV + other screens (smartphone, tablet/iPad, computer, and videogames).
b
Total other screens: smartphone + tablet/iPad + computer + videogames.