Table 1.
Study timeline and assessment of the CHCN-BTH.
| Baseline | Follow-up£ | Repeated measurements* | |
|---|---|---|---|
| Baseline characteristics | |||
| Sociodemographic data | X | X | X |
| Personal and family disease history | X | ||
| Lifestyle behaviors | X | X | X |
| Indoor air pollution exposure | X | X | |
| Mental health | X | X | |
| Blood pressure | X | X | X |
| Body composition | X | X | |
| Electrocardiography | X | X | |
| Bone mineral density | X | X | |
| Lung function | X | X | |
| Grip strength | X | X | |
| Oxygen saturation | X | X | |
| Serum markers | X | X | X |
| Outcome measures | |||
| Hypertension | X | X | |
| Diabetes | X | X | |
| Ischemic heart disease | X | X | |
| Cerebrovascular disease | X | X | |
| Chronic obstructive pulmonary disease | X | X | |
| Cancer | X | X | |
| Death/cause of death | X | X | |
£
All the participants will be followed up every 2 years; the proportion of loss to follow-up will be restricted to <10%.
*
A subgroup of baseline participants will be selected to do repeated measurement every 2 years; the minimum proportion of repeated measurements will be 20% in each time of follow-up. All measures will be repeated after five patient follow-ups.