Table 1.
The weighted descriptive statistics of the study participants (n=11847)
| Variables | Value |
|---|---|
| Sociodemographic characteristics | |
| Age (years, mean ± SD) | 59.3±10.6 |
| Sex (%) | |
| Male | 48.0 |
| Female | 52.0 |
| Educational level (%) | |
| Low | 63.5 |
| Medium | 22.3 |
| High | 14.2 |
| BMI (kg/m2, mean ± SD) | 21.5±2.1 |
| Smoking status (%) | |
| Current | 27.2 |
| Former | 9.0 |
| Never | 63.8 |
| Pack-years of cigarette for current smokers | 32.3 ± 24.1 |
| Drinking frequency (%) | |
| >1/month | 24.5 |
| <1/month | 7.8 |
| Never | 67.7 |
| Residence (%) | |
| Urban | 32.4 |
| Rural | 67.6 |
| Type of heating energy (%) | |
| Central heating | 11.6 |
| Clean (solar energy, electricity, natural gas) | 24.3 |
| Unclean (coal or biomass) | 46.3 |
| Other | 17.9 |
| Type of cooking energy (%) | |
| Clean (solar energy, electricity, natural gas) | 53.7 |
| Unclean (coal or biomass) | 45.7 |
| Other | 0.6 |
| Diabetes | |
| Prevalence of T2DM (%) | 15.8 |
| Fasting glucose (mmol/L, mean ± SD) | 6.1±2.0 |
| HbA1c (%, mean ± SD) | 5.2±0.8 |
Abbreviations: SD, standard deviation; BMI, body mass index; HbA1c, glycosylated hemoglobin, %.
All numbers were weighted with the inverse probability weights, which were constructed by estimating a logic regression of whether the individual participated in the blood drawn.