Table 1: Description of samples.

Urban areasRural areasTotal
%%%

Gender
 Male99551.80%358145.80%457646.99%
 Female92648.20%423754.20%516353.01%
Age group (years)
 45–5553727.95%261133.40%314832.32%
 56–6572837.90%308739.49%381539.17%
 >6565634.15%212027.12%277628.50%
Ethnicity
 Han179493.39%724792.70%904192.83%
 Other ethnic groups1276.61%5717.30%6987.17%
Marital status
 Divorced/single/separated25913.48%99612.74%125512.89%
 Married/partnered166286.52%682287.26%848487.11%
Education level
 Less than primary school38720.15%408952.30%447645.96%
 Less than lower secondary93348.57%328041.95%421343.26%
 Upper secondary, vocational training60131.29%4495.74%105010.78%
Family size
 ≤280141.70%273334.96%353436.29%
 ≥3112058.30%508565.04%620563.71%
Household income per capita ()17,369957.046611400.2311,019555.23
Type of labour
 Farmer58930.66%632480.89%691370.98%
 Self-employed/employed97550.75%135217.29%232723.89%
 Government & institutions35718.58%1421.82%4995.12%
Drinking
 Never drunk96049.97%446757.14%542755.72%
 History of drinking96150.03%335142.86%431244.28%
Smoking
 Never smoked109557.00%450957.67%560457.54%
 History of smoking82643.00%330942.33%413542.46%
ADL
 Without ADL177992.61%701889.77%879790.33%
 With any ADL1427.39%80010.23%9429.67%
BMI
 ≤18.580141.70%399251.06%479349.21%
 18.6–24.1703.64%5136.56%5835.99%
 >24.1105054.66%331342.38%436344.80%
Self-reported health ()3.73150.02673.91750.02013.84130.0174
Has hypertension
 No124664.86%558171.39%682770.10%
 Yes67535.14%223728.61%291229.90%

Note: calculations were weighted using individual sampling weights and adjusted for household and individual responses.