| Total population (N = 688) | Community residents (n = 380) | Supermarket shoppers (n = 308) |
---|---|---|---|
Sex (Male), % | 31.2 | 26.3** | 37.3 |
Age (year), mean ± SD | 39.9 ± 15.0 | 42.5 ± 16.1** | 36.7 ± 12.7 |
Educational level, % | |||
 Junior high school or below | 18.6 | 13.9** | 24.4 |
 High or technical school | 25.7 | 23.9 | 27.9 |
 Junior college | 16.3 | 16.1 | 16.6 |
 Undergraduate | 29.8 | 35.5 | 22.7 |
 Graduate or above | 9.6 | 10.5 | 8.4 |
Household monthly income (Yuan) per capita, % | |||
 ≤ 5000 | 59.7 | 57.4** | 62.7 |
 50,001–10,000 | 26.3 | 31.6 | 19.8 |
 10,0001–20,000 | 10.6 | 7.6 | 14.3 |
 ≥ 20,0001 | 3.3 | 3.4 | 3.2 |
BMI (kg/m2), mean ± SD | 23.1 ± 3.2 | 23.2 ± 3.2 | 23.1 ± 3.2 |
Existing health problems, % | |||
 Hypertension | 51.6 | 55.0* | 47.4 |
 Cardiovascular disease | 40.8 | 43.4 | 37.7 |
 Chronic kidney disease | 12.4 | 13.4 | 11.0 |
Knowledge, attitude and behavior towards salt intake | |||
 Know recommended daily salt intake, % | 69.3 | 72.6* | 65.3 |
 Score of attitude towards salt intake, mean ± SD a | 66.1 ± 19.9 | 68.2 ± 19.5** | 63.6 ± 20.1 |
 Salt reduction behavior, % b | 67.9 | 73.9** | 60.4 |