|
| Variables | Grouping | Frequency (valid percent (%)) | No. and prevalence rate (%) of hypertension | OR [95% CI] | χ2 | |
|
| Age (years) | 1 = “<20” (reference) | 286 (3.8) | 3 (1.0) | — | 1510.371 | <0.001 |
| 2 = “20–34” | 1566 (21.1) | 63 (4.0) | 3.954 [1.233–12.679] | | |
| 3 = “35–49” | 2315 (31.2) | 439 (19.0) | 22.075 [7.044–69.182] | | |
| 4 = “50–64” | 2021 (27.2) | 841 (41.6) | 67.232 [21.481–210.431] | | |
| 5 = “≥65” | 1242 (16.7) | 765 (61.6) | 151.289 [48.226–474.610] | | |
|
| Sex | 1 = “Men” | 3571 (48.1) | 1125 (31.6) | 1.525 [1.361–1.709] | 32.317 | <0.001 |
| 0 = “Women” (reference) | 3859 (51.9) | 986 (25.6) | — | | |
|
| Ethnic | 1 = “Hans” | 7353 (99.1) | 2090 (28.4) | 1.127 [0.624–2.035] | 0.032 | 0.857 |
| 0 = “Others” (reference) | 68 (0.9) | 20 (29.4) | — | | |
| Missing value | 9 | | | | |
|
| Education | 1 = “No formal school education” (reference) | 564 (7.6) | 281 (49.8) | — | 437.957 | <0.001 |
| 2 = “Did not finish primary school” | 928 (12.6) | 399 (43.0) | 0.760 [0.616–0.937] | | |
| 3 = “Primary school” | 1412 (19.1) | 491 (34.8) | 0.537 [0.440–0.655] | | |
| 4 = “Junior high school” | 2739 (37.1) | 560 (20.4) | 0.259 [0.214–0.313] | | |
| 5 = “Senior high school and technical secondary school” | 1153 (15.6) | 301 (26.1) | 0.356 [0.288–0.439] | | |
| 6 = “Junior college” | 384 (5.2) | 50 (13.0) | 0.151 [0.107–0.212] | | |
| 7 = “Undergraduate and above” | 201 (2.7) | 11 (5.5) | 0.058 [0.031–0.109] | | |
| Missing value | 49 | | | | |
|
| Occupation | 1 = “Students” (other residents as a reference) | 183 (2.5) | 1 (0.5) | 0.013 [0.002–0.096] | 432.553 | <0.001 |
| 2 = “Institutional and enterprise staff” (other residents as a reference) | 452 (6.1) | 52 (11.5) | 0.311 [0.232–0.417] | | |
| 3 = “Scientific and technical staff” (other residents as a reference) | 74 (1.0) | 13 (17.6) | 0.535 [0.293–0.976] | | |
| 4 = “Other workers” (other residents as a reference) | 4425 (59.8) | 1052 (23.8) | 0.574 [0.518–0.635] | | |
| 5 = “Not working, such as jobless, retired, etc.” (other residents as a reference) | 2264 (30.6) | 981 (43.3) | 2.747 [2.470–3.055] | | |
|
| The monthly average income per capita (yuan) | 1 = “<500” (reference) | 288 (4.3) | 92 (31.9) | — | 28.621 | <0.001 |
| 2 = “≥500 and <1000” | 552 (8.2) | 205 (37.1) | 1.259 [0.931–1.702] | | |
| 3 = “≥1000 and <3000” | 2950 (43.8) | 821 (27.8) | 0.822 [0.633–1.066] | | |
| 4 = “≥3000 and <5000” | 2207 (32.8) | 580 (36.3) | 0.759 [0.583–0.990] | | |
| 5 = “≥5000” | 736 (10.9) | 198 (26.9) | 0.784 [0.583–1.055] | | |
| Missing value | 697 | | | | |
|
| Family history of hypertension? | 1 = “Yes” | 1134 (15.3) | 684 (60.3) | 5.362 [4.557–6.308] | 669.778 | <0.001 |
| 0 = “No” (reference) | 6296 (84.7) | 1427 (22.7) | — | | |
|
| The average amount of cigarettes smoked daily | 1 = “Nonsmoker” (reference) | 3916 (52.9) | 1090 (27.8) | — | 13.522 | <0.05 |
| 2 = “Nonsmoker with passive smoking” | 1856 (25.0) | 507 (27.3) | 0.974 [0.861–1.103] | | |
| 3 = “1–4” | 341 (4.6) | 111 (32.6) | 1.251 [0.987–1.586] | | |
| 4 = “5–9” | 251 (3.4) | 79 (31.5) | 1.191 [0.904–1.568] | | |
| 5 = “10–19” | 617 (8.3) | 175 (28.4) | 1.027 [0.850–1.239] | | |
| 6 = “20–29” | 325 (4.4) | 107 (32.9) | 1.273 [0.999–1.620] | | |
| 7 = “≥30” | 100 (1.4) | 38 (38.0) | 1.589 [1.055–2.394] | | |
| Missing value | 24 | | | | |
|
| Frequency of getting drunk | 1 = “Almost daily (≥5 days per week)” (reference) | 79 (1.2) | 32 (40.5) | — | 17.692 | <0.01 |
| 2 = “1–4 days per week” | 93 (1.4) | 29 (31.2) | 0.666 [0.355–1.247] | | |
| 3 = “1–3 days per month” | 153 (2.2) | 58 (37.9) | 0.897 [0.515–1.563] | | |
| 4 = “Less than 1 day per month” | 288 (4.2) | 100 (34.7) | 0.781 [0.469–1.302] | | |
| 5 = “Never” | 6209 (91.0) | 1751 (28.2) | 0.577 [0.367–0.907] | | |
| Missing value | 608 | | | | |
|
| Frequency of vegetable | 1 = “Every day” (reference) | 6577 (89.5) | 1889 (28.7) | — | 10.316 | <0.05 |
| 2 = “3–5 days per week” | 532 (7.2) | 130 (24.4) | 0.803 [0.654–0.985] | | |
| 3 = “1-2 days per week” | 160 (2.2) | 36 (22.5) | 0.721 [0.495–1.048] | | |
| 4 = “1–3 days per month” | 32 (0.4) | 8 (25.0) | 0.827 [0.371–1.845] | | |
| 5 = “Not eaten” | 48 (0.7) | 19 (39.6) | 1.626 [0.910–2.907] | | |
| Missing value | 81 | | | | |
|
| Frequency of fruit | 1 = “Every day” (reference) | 2544 (34.7) | 688 (27.0) | — | 43.868 | <0.001 |
| 2 = “3–5 days per week” | 1824 (24.9) | 488 (26.8) | 0.985 [0.860–1.129] | | |
| 3 = “1-2 days per week” | 1672 (22.8) | 438 (26.2) | 0.958 [0.833–1.101] | | |
| 4 = “1–3 days per month” | 667 (9.0) | 239 (36.1) | 1.524 [1.272–1.827] | | |
| 5 = “Not eaten” | 621 (8.5) | 211 (35.6) | 1.490 [1.237–1.795] | | |
| Missing value | 107 | | | | |
|
| Frequency of dairy products | 1 = “Every day” (reference) | 760 (10.3) | 202 (26.6) | — | 37.984 | <0.001 |
| 2 = “3–5 days per week” | 843 (11.5) | 194 (23.0) | 0.826 [0.658–1.036] | | |
| 3 = “1-2 days per week” | 906 (12.3) | 208 (23.0) | 0.823 [0.658–1.029] | | |
| 4 = “1–3 days per month” | 876 (11.9) | 271 (30.9) | 1.237 [0.998–1.535] | | |
| 5 = “Not eaten” | 3972 (54.0) | 1212 (30.5) | 1.213 [1.019–1.444] | | |
| Missing value | 73 | | | | |
|
| Sleep (hours) | 1 = “<6” (reference) | 319 (4.4) | 164 (51.4) | — | 87.831 | <0.001 |
| 2 = “6–8” | 5604 (76.7) | 1534 (27.4) | 0.356 [0.284–0.447] | | |
| 3 = “>8” | 1384 (18.9) | 371 (26.8) | 0.346 [0.270–0.444] | | |
| Missing value | 123 | | | | |
|
| BMI | 1 = “<18.5” (reference) | 503 (6.8) | 97 (19.3) | — | 218.805 | <0.001 |
| 2 = “≥18.5 and <24” | 4678 (63.2) | 1131 (24.2) | 1.335 [1.059–1.682] | | |
| 3 = “≥24 and <28” | 1770 (23.9) | 647 (36.6) | 2.411 [1.894–3.071] | | |
| 4 = “≥28” | 455 (6.1) | 225 (49.5) | 4.095 [3.071–5.460] | | |
| Missing value | 24 | | | | |
|
| Central obesity | 1 = “Yes” | 1590 (21.6) | 688 (43.3) | 2.361 [2.103–2.652] | 217.602 | <0.001 |
| 0 = “No” (reference) | 5779 (78.4) | 1411 (24.4) | — | | |
| Missing value | 61 | | | | |
|
| Hypertension | 1 = “Yes” | 2111 (28.5) | | | | |
| 0 = “No” | 5319 (71.5) | | | | |
|
