Table 1. Baseline characteristics of 21,658 women and 8,284 men aged 50+ in the Guangzhou Biobank Cohort Study first examined in 2003 to 2008 and followed up until January 2016.
| Men | Women | |||
|---|---|---|---|---|
| Never smokers | Ever smokers | Never smokers | Ever smokers | |
| Number of participants (row %) | 3,288 (39.7) | 4,996 (60.3) | 20,894 (96.5) | 764 (3.5) |
| Age, years, mean (standard deviation) | 64.7 (6.6) | 64.2 (6.8) | 60.9 (7) | 67.2 (6.3) |
| Age group, years, % | ||||
| 50–54 | 7.6 | 9.1 | 23.7 | 4.7 |
| 55–59 | 17.6 | 20.8 | 27.7 | 9.4 |
| 60–64 | 25.8 | 24.4 | 19.1 | 18 |
| 65–69 | 26.1 | 23.6 | 17.3 | 32.7 |
| 70–74 | 17.6 | 17.2 | 9.5 | 27.8 |
| 75–79 | 4.1 | 4 | 2.2 | 5.2 |
| 80+ | 1.2 | 0.9 | 0.5 | 2.1 |
| Education, % | ||||
| Primary or below | 22.3 | 35.1 | 46.7 | 79.3 |
| Secondary | 53.6 | 52.6 | 47.3 | 19.9 |
| College or above | 24.2 | 12.3 | 6 | 0.8 |
| Occupation, % | ||||
| Manual | 41.6 | 51.7 | 65.7 | 79.3 |
| Non-manual | 43.5 | 34 | 18.7 | 11.7 |
| Others | 14.9 | 14.3 | 15.6 | 9 |
| Family income, CNY/year, % | ||||
| <10,000 | 3.6 | 5.5 | 5.9 | 12.3 |
| 10,000–29,999 | 32.2 | 34.9 | 31.3 | 39.5 |
| 30,000–49,999 | 23.1 | 21.4 | 21.3 | 10.2 |
| ≥50,000 | 21.9 | 16.1 | 16.8 | 6.6 |
| Don’t know | 19.2 | 22 | 24.7 | 31.5 |
| Physical activity, % | ||||
| Inactive | 7.5 | 9 | 8 | 5.9 |
| Minimally active | 43.3 | 45.8 | 39.3 | 43.4 |
| Active | 49.2 | 45.2 | 52.6 | 50.7 |
| Alcohol use, % | ||||
| Never | 65.1 | 46.8 | 79.6 | 70.7 |
| Former | 3.8 | 7.8 | 2.4 | 5 |
| Current | 31.2 | 45.5 | 18 | 24.4 |
| Poor health status, % | ||||
| No | 87.1 | 83.4 | 81.2 | 79.9 |
| Yes | 12.9 | 16.6 | 18.8 | 20.1 |