Table 1.
Socio-demographic characteristics of the study population
| Variables | Normal (12,657) |
Elevated (3,670) | Stage I (6,554) |
Stage II (6,497) |
Total (29,378) |
P-value |
|---|---|---|---|---|---|---|
| Gender, female, % | 54.0 | 50.5 | 52.3 | 50.2 | 52.3 | <0.001 |
| Area, rural, % | 28.0 | 32.9 | 28.2 | 32.4 | 29.6 | <0.001 |
| Marital status, single, % | 12.5 | 15.8 | 17.2 | 15.8 | 14.7 | <0.001 |
| Occupation | <0.001 | |||||
|
Employee Worker Self-employed housewife Other |
7.9 5.6 21.6 45.1 19.9 |
7.8 7.1 26.9 40.4 17.9 |
8.5 6.8 24.1 42.4 18.2 |
9.1 6.3 26.4 40.1 18.1 |
8.3 6.2 23.9 42.8 18.9 |
|
| Smoking, no, % | 79.7 | 80.2 | 80.6 | 79.3 | 79.9 | 0.256 |
| WI | <0.001 | |||||
|
Poorest Poor Moderate Rich Richest |
19.1 19.7 19.8 19.7 21.6 |
21.8 20.2 18.9 20.6 18.5 |
20.0 20.6 20.7 19.9 18.8 |
19.6 21.0 20.3 20.2 18.8 |
19.7 20.3 20.0 20.0 20.0 |
|
| Age, years | 47.4 ± 17.1 | 42.5 ± 15.3 | 41.6 ± 15.2 | 42.9 ± 15.3 | 44.5 ± 16.2 | <0.001 |
| BMI (kg/m2) | 26.9 ± 5.2 | 26.1 ± 4.9 | 26.2 ± 4.9 | 26.3 ± 5.1 | 26.5 ± 5.1 | <0.001 |
| Physical activity, MET/min/week | 360.0 (1680.0) | 456.0 (2100.0) | 420.0 (1840.0) | 480.0 (2160.0) | 400.0 (1904.0) | <0.001 |
| Education, years | 8.0 (9.0) | 9.0 (7.0) | 10.0 (7.0) | 9.0 (7.0) | 9.0 (7.0) | <0.001 |
BMI, body mass index; MET, metabolic equivalent of task; WI, wealth index; SBP, systolic blood pressure; DBP, diastolic blood pressure; BP, blood pressure
Values are mean ± SD for continuous and percentage for categorical variables
BP category: normal (SBP < 120 mmHg and DBP < 80 mmHg), elevated BP (SBP 120 to 129 mmHg or DBP 80 to 84 mmHg), stage I hypertension (SBP 130 to 139 mmHg or DBP 85 to 89 mmHg), and stage II hypertension (SBP ≥ 140 mmHg or DBP ≥ 90 mmHg)