Table 1.
Rural (n 701) | Urban (n 934) | |||
---|---|---|---|---|
Characteristic | % or Mean | 95 % CI | % or Mean | 95 % CI |
Age group (%; n 1635) | ||||
20–39 years | 41·2 | 37·6, 44·9 | 45·2 | 41·5, 48·9 |
40–59 years | 35·4 | 31·8, 38·9 | 44·8 | 41·2, 48·4 |
≥60 years | 23·4 | 20·2, 26·5 | 10·0 | 8·4, 11·6 |
Mean age (years) | 45·9 | 44·8, 47·1 | 41·8 | 41·0, 42·7 |
Sex (%; n 1635) | ||||
Men | 40·4 | 36·7, 44·0 | 49·8 | 46·2, 53·5 |
Women | 59·6 | 56·0, 63·3 | 50·2 | 46·5, 53·8 |
Education (%; n 1635) | ||||
0–4 years | 49·1 | 45·4, 52·8 | 21·1 | 18·1, 24·1 |
5–12 years | 44·2 | 40·5, 47·9 | 57·3 | 53·7, 60·9 |
≥13 years | 6·7 | 4·8, 8·6 | 21·6 | 18·6, 24·6 |
Mean education (years) | 5·1 | 4·7, 5·5 | 8·4 | 8·0, 8·8 |
Current tobacco use (%; n 1632) | ||||
Yes | 35·8 | 32·2, 39·4 | 22·7 | 19·6, 25·7 |
No | 64·2 | 60·6, 67·7 | 77·3 | 74·3, 80·3 |
Current alcohol use (%; n 1632) | ||||
Yes | 14·6 | 12·0, 17·2 | 13·7 | 11·2, 16·2 |
No | 85·4 | 82·8, 88·0 | 86·3 | 83·8, 88·8 |
Salt consumption† (%; n 1390) | ||||
≤5 g/d | 23·0 | 19·8, 26·1 | 53·0 | 48·8, 57·2 |
>5 g/d | 77·0 | 73·9, 80·2 | 47·0 | 42·8, 51·2 |
Mean salt consumption (g/d) | 9·2 | 8·8, 9·6 | 5·6 | 5·3, 5·9 |
BMI category (%; n 1442) | ||||
<25·0 kg/m2 | 71·9 | 68·5, 75·2 | 50·7 | 46·7, 54·7 |
≥25·0 kg/m2 | 28·1 | 24·8, 31·5 | 49·3 | 45·2, 53·3 |
Mean BMI (kg/m2) | 22·6 | 22·3, 22·9 | 25·3 | 24·9, 25·7 |
Hypertension‡ (%; n 1632) | ||||
Known | 10·4 | 8·1, 12·7 | 12·0 | 9·7, 14·1 |
Newly diagnosed | 19·9 | 16·9, 22·8 | 22·3 | 19·4, 25·3 |
Pre-hypertension | 31·6 | 28·1, 35·0 | 33·0 | 29·6, 36·4 |
Normal | 38·1 | 34·5, 41·7 | 32·7 | 29·2, 36·2 |
Mean SBP (mmHg) | 122·7 | 121·2, 124·2 | 123·6 | 122·3, 125·0 |
Mean DBP (mmHg) | 81·6 | 80·7, 82·5 | 83·1 | 82·2, 84·0 |
SBP, systolic blood pressure; DBP, diastolic blood pressure.
Data are presented as means for continuous variables or proportions for categorical variables, both with 95 % CI.
Estimated from 24h urinary Na excretion.
Known hypertension defined as self-reported hypertension (irrespective of treatment); new hypertension defined as measured SBP/DBP≥140/90 mmHg; pre-hypertension defined as measured SBP/DBP=120–139/80–89 mmHg; and normal defined as measured SBP/DBP<120/80 mmHg.