Characteristics and main results of the prospective cohort studies included in the meta-analysis
| Study | Participants | Age at baseline (years) | Follow-up (years) | Person-years | Deaths (n) | Results | |||
| Sitting time | |||||||||
| Katzmarzyk et al15 (Canada Fitness Survey) | N=17 013 men and women | 18–90 | 12 | 204 732 | 1832 | None/¼ time | ½ Time | ¾ Time/all | |
| Deaths | 826 | 542 | 464 | ||||||
| Person-years | 117 965 | 52 346 | 34 421 | ||||||
| Crude RR* | 1.00 | 1.48 | 1.93 | ||||||
| Age-sex-HR† | 1.00 | 1.14 | 1.51 | ||||||
| Patel et al16 (Cancer Prevention Study II Nutrition Cohort) | N=123 216 men and women | 50–74 | 14 | 1 610 728 | 19 230 | <3 h | 3–5 h | ≥6 h | |
| Deaths | 7068 | 9194 | 2968 | ||||||
| Person-years | 755 214 | 688 709 | 166 805 | ||||||
| Crude RR* | 1.00 | 1.43 | 1.90 | ||||||
| Age-sex-HR† | 1.00 | 1.18 | 1.44 | ||||||
| TV viewing | |||||||||
| Dunstan et al17 (Australian Diabetes, Obesity and Lifestyle Study (AusDiab)) | N=8800 men and women | ≥25 | 6.6 | 58 087 | 284 | <2 h | 2–3.9 | ≥4 h | |
| Deaths | 105 | 125 | 54 | ||||||
| Person-years | 33 024 | 20 737 | 4326 | ||||||
| Crude RR* | 1.00 | 1.89 | 3.93 | ||||||
| Age-sex-HR† | 1.00 | 1.20 | 1.67 | ||||||
| Stamatakis et al18 (Scottish Health Survey) | N=4512 men and women | ≥35 | 4.3 | 19 364 | 325 | <2 h | 2–3.9 h | ≥4 h | |
| Deaths | 42 | 138 | 146 | ||||||
| Person-years | 3328 | 10 548 | 5488 | ||||||
| Crude RR* | 1.00 | 1.04 | 2.11 | ||||||
| Age-sex-HR† | 1.00 | 1.13 | 1.77 | ||||||
| Wijndaele et al19 (EPIC—Norfolk Study) | N=13 197 men and women | 45–79 | 9.5 | 124 902 | 1270 | <2.5 h | 2.5–3.6 h | >3.6 h | |
| Deaths | 291 | 414 | 565 | ||||||
| Person-years | 41 936 | 42 288 | 40 680 | ||||||
| Crude RR* | 1.00 | 1.41 | 2.17 | ||||||
| Age-sex-HR† | 1.00 | 1.17 | 1.32 | ||||||