Prevalences of sitting and TV viewing at baseline in the prospective cohort studies included in the meta-analysis
| Study | Prevalences | |||
| Sitting time | ||||
| Katzmarzyk et al15 (Canada Fitness Survey) | None/¼ time | ½ Time | ¾ Time/all | |
| Source prevalence (%)* | 56.9 | 25.7 | 17.4 | |
| Case prevalence (%)† | 45.1 | 29.6 | 25.3 | |
| Case:source ratio | 0.79 | 1.15 | 1.45 | |
| Patel et al16 (Cancer Prevention Study II Nutrition Cohort) | <3 h | 3–5 h | ≥6 h | |
| Source prevalence (%)* | 46.2 | 43.1 | 10.7 | |
| Case prevalence (%)† | 36.8 | 47.8 | 15.4 | |
| Case:source ratio | 0.80 | 1.11 | 1.44 | |
| Average case:source ratio‡ | 0.80 | 1.11 | 1.44 | |
| TV viewing | ||||
| Dunstan et al17 (Australian Diabetes, Obesity and Lifestyle Study (AusDiab)) | <2 h | 2–3.9 h | ≥4 h | |
| Source prevalence (%)* | 56.5 | 35.9 | 7.6 | |
| Case prevalence (%)† | 37.0 | 44.0 | 19.0 | |
| Case:source ratio | 0.65 | 1.23 | 2.50 | |
| Stamatakis et al18 (Scottish Health Survey) | <2 h | 2–3.9 h | ≥4 h | |
| Source prevalence (%)* | 17.1 | 54.1 | 28.8 | |
| Case prevalence (%)† | 13.4 | 45.2 | 41.4 | |
| Case:source ratio | 0.78 | 0.84 | 1.44 | |
| Wijndaele et al19 (EPIC—Norfolk Study) | <2.5 h | 2.5–3.6 h | >3.6 h | |
| Source prevalence (%)* | 33.3 | 33.8 | 32.9 | |
| Case prevalence (%)† | 22.9 | 32.6 | 44.5 | |
| Case:source ratio | 0.69 | 0.96 | 1.35 | |
| Average case:source ratio‡ | 0.69 | 1.03 | 1.75 | |