Table 1.
Descriptive baseline characteristics
| Variable | PA pattern sample (N = 96,351) | Mortality sample (N = 84,877) |
|---|---|---|
| Sex (%) | ||
| Female | 54,272 (56.3) | 47,081 (55.5) |
| Male | 42,079 (43.7) | 37,796 (44.5) |
| Age at baseline (sd) | 56.16 (7.82) | 55.84 (7.83) |
| Age at accelerometry (sd) | 61.86 (7.85) | 61.51 (7.86) |
| Age at exit (sd) | 68.67 (7.78) | 68.35 (7.79) |
| Body mass index (sd) | 26.72 (4.53) | 26.70 (4.51) |
| Diet score (sd) | 3.71 (1.33) | 3.70 (1.33) |
| Socio-economic status (sd) | -1.73 (2.82) | -1.72 (2.82) |
| Sedentary behavior (sd) | 4.29 (2.46) | 4.29 (2.47) |
| Smoking status (%) | ||
| Never | 54,872 (57.0) | 48,947 (57.7) |
| Former | 34,574 (35.9) | 30,069 (35.4) |
| Current | 6,660 (6.9) | 5,861 (6.9) |
| Pack years of smoking (sd) | 20.25 (16.66) | 6.49 (13.24) |
| Alcohol drinking status (%) | ||
| Never | 2,789 (2.9) | 2,455 (2.9) |
| Former | 2,654 (2.8) | 2,318 (2.7) |
| Current | 90,831 (94.3) | 80,104 (94.4) |
| Alcohol intake in grams/day (sd) | 16 (17) | 16 (17) |
| Qualifications (%) | ||
| College or university degree | 41,407 (43.0) | 37,088 (43.7) |
| A levels/AS levels or equivalent, NVQ or HND or HNC or equivalent, Other professional qualifications | 22,599 (23.5) | 20,101 (23.7) |
| O levels/GCSEs or equivalent, CSEs or equivalent | 23,419 (24.3) | 20,812 (24.5) |
| None of the above | 7,973 (8.3) | 6,876 (8.1) |
| Diabetes (%) | ||
| No | 93,737 (97.3) | 82,787 (97.5) |
| Yes | 2,614 (2.7) | 2,090 (2.5) |
| Cardiovascular disease (%) | ||
| No | 91,634 (95.1) | 80,920 (95.3) |
| Yes | 4,717 (4.9) | 3,957 (4.7) |
The PA pattern sample consists of all participants with valid accelerometry data (those with missing body mass index were excluded). For the mortality sample, we excluded subjects with pre-accelerometry cancer and those with missing covariates