Health issue | Research design | All | Relationship typea | Lower ends of significant cutoffsb (k) | |||
---|---|---|---|---|---|---|---|
+ | - | 0 | ? | ||||
Adiposity | Intervention | 1 | 0 | 0 | 1 | 0 | TV: ≤1 h/d (5), ≤ 1.5 h/d (1), ≤2 h/d (4); C: ≤1 h/d (1), ≤2 h/d (2); G: ≤2 h/d (1); ST: ≤1 h/d (1), ≤2 h/d (7) |
Longitudinal | 4 | 2 | 0 | 0 | 2 | ||
Case-control | 8 | 7 | 0 | 1 | 0 | ||
Cross-sectional | 76 | 36 | 0 | 15 | 25 | ||
Total | 89 | 45 | 0 | 17 | 27 | ||
Myopia, | Longitudinal | 3 | 0 | 0 | 2 | 1 | TV: ≤1 h/d (2), ≤2 h/d (1); C ≤ 1 h/time (1), ≤1 h/d (1), ≤2 h/d (1), ≤3 h/d (1); I: ≤ 2 h/d; non-TV ST: ≤1 h/d (1), ≤3 h/d (1); ST: 0 h/d (1), ≤ 0.5 h/d (2), ≤1 h/d (2), ≤2 h/d (2); ≤3 h/d (2). |
Case-control | 4 | 4 | 0 | 0 | 0 | ||
Cross-sectional | 69 | 41 | 1 | 10 | 17 | ||
Total | 76 | 45 | 1 | 12 | 18 | ||
Psycho-behavioral problems, | Intervention | 1 | 1 | 0 | 0 | 0 | TV: ≤1 h/d (2); I: entertainment 0 h/week (1), chatting 0 h/week (0), ≤ 10 h/week (1); G: ≤2 h/time (1); M: ≤20 min/d (1); ≤1 h/weekday (1), ≤1 h/weekend day (1); ST: ≤2 h/weekday (1), ≤2 h/weekend day (1), ≤2 h/d (5). |
Longitudinal | 2 | 2 | 0 | 0 | 0 | ||
Cross-sectional | 41 | 34 | 0 | 2 | 5 | ||
Total | 44 | 37 | 0 | 2 | 5 | ||
Cardio-metabolic disease risks | Case-control | 1 | 1 | 0 | 0 | 0 | TV: < 14 h/week (1); C: < 7 h/week (1); M: ≤3.5 h/week (1), ≤ 6 h/week (1); ST: ≤1 h/d (1), ≤2 h/d (3). |
Cross-sectional | 9 | 5 | 0 | 2 | 2 | ||
Total | 10 | 6 | 0 | 2 | 2 | ||
Poor academic performance | Longitudinal | 3 | 2 | 0 | 0 | 1 | M: < 1 h/weekday (1), < 1 h/weekend day (1); non-TV ST: ≤1 h/d (1). |
Cross-sectional | 6 | 6 | 0 | 0 | 0 | ||
Total | 9 | 8 | 0 | 0 | 1 | ||
Sleep disorders | Cross-sectional | 9 | 7 | 0 | 0 | 2 | TV: ≤2 h/weekday (1), ≤2 h/weekend day (1), ≤2 h/bedtime (1); C ≤ 1 h/d (1). |
Poor physical fitness | Cross-sectional | 8 | 5 | 0 | 0 | 3 | ST ≤ 2 h/d (3), ≤2 h/weekday (1), ≤2 h/weekend day (1). |
Musculoskeletal injuries | Cross-sectional | 8 | 6 | 0 | 0 | 2 | C ≤ 4 h/d (1); M: ≤4 h/d (1); ST: ≤1040 h (1). |
Sub-health | Cross-sectional | 6 | 6 | 0 | 0 | 0 | I: ≤1 h/d (2), <4 h/d (1); ST: ≤2 h/weekday (1), ≤2 h/weekend day (1) |
Miscellaneous issues | Case-control | 1 | 1 | 0 | 0 | 0 | TV: <1 h/d (1) |
Cross-sectional | 8 | 4 | 0 | 2 | 2 | ||
Total | 9 | 5 | 0 | 2 | 2 |