Table 1. Characteristics of 898 929 Young and Middle-Aged Adults With and Without Isolated Systolic Hypertension.
| Characteristic | Participants, No. (%) | ||||
|---|---|---|---|---|---|
| Normotension | Hypertension | ||||
| ISH | IDH | SDH | Controlled | ||
| Total participants | 663 791 (73.8) | 62 819 (7.0) | 35 448 (3.9) | 116 682 (13.0) | 20 189 (2.3) |
| Age range, y | |||||
| 35-39 | 129 083 (19.5) | 5455 (8.7) | 5465 (15.4) | 12 228 (10.5) | 1663 (8.2) |
| 40-44 | 234 368 (35.3) | 17 705 (28.2) | 12 035 (34.0) | 34 876 (29.9) | 5291 (26.2) |
| 45-49 | 300 340 (45.3) | 39 659 (63.1) | 17 948 (50.6) | 69 578 (59.6) | 13 235 (65.6) |
| Sex | |||||
| Male | 240 027 (36.2) | 21 402 (34.1) | 21 355 (60.2) | 58 558 (50.2) | 8930 (44.2) |
| Female | 423 764 (63.9) | 41 417 (65.9) | 14 093 (39.8) | 58 124 (49.8) | 11 259 (55.8) |
| Urbanity of residence | |||||
| Urban | 278 786 (42.0) | 22 471 (35.8) | 13 062 (36.8) | 43 221 (37.0) | 8153 (40.4) |
| Rural | 383 932 (57.8) | 40 229 (64.0) | 22 310 (62.9) | 73 258 (62.8) | 11 995 (59.4) |
| Unknown | 1073 (0.2) | 119 (0.2) | 76 (0.2) | 203 (0.2) | 41 (0.2) |
| Geographic region of residence | |||||
| Eastern | 229 657 (34.6) | 26 249 (41.8) | 11 774 (33.2) | 42 887 (36.8) | 8227 (40.7) |
| Central | 177 127 (26.7) | 16 544 (26.3) | 9613 (27.1) | 32 362 (27.7) | 5488 (27.2) |
| Western | 256 823 (38.7) | 20 022 (31.9) | 14 059 (39.7) | 41 408 (35.5) | 6473 (32.1) |
| Unknown | 184 (0.03) | 4 (0.006) | 2 (0.006) | 25 (0.02) | 1 (0.006) |
| Educational level | |||||
| ≤Primary school | 186 939 (28.2) | 21 978 (35.0) | 9686 (27.3) | 35 024 (30.0) | 5685 (28.2) |
| Middle school | 244 910 (36.9) | 24 860 (39.6) | 13 494 (38.1) | 44 633 (38.3) | 7679 (38.0) |
| High school | 119 659 (18.0) | 9222 (14.7) | 6203 (17.5) | 19 636 (16.8) | 3377 (16.7) |
| ≥College | 102 738 (15.5) | 5907 (9.4) | 5640 (15.9) | 15 617 (13.4) | 3294 (16.3) |
| Unknown | 9545 (1.4) | 852 (1.4) | 425 (1.2) | 1772 (1.5) | 154 (0.8) |
| Employment status | |||||
| Employed | 591 174 (89.1) | 55 624 (88.5) | 32 031 (90.4) | 103 809 (89.0) | 17 349 (85.9) |
| Unemployed | 11 393 (1.7) | 1072 (1.7) | 753 (2.1) | 2603 (2.2) | 573 (2.8) |
| Retired | 8702 (1.3) | 1002 (1.6) | 345 (1.0) | 1532 (1.3) | 442 (2.2) |
| Homemaker | 39 293 (5.9) | 4073 (6.5) | 1667 (4.7) | 6299 (5.4) | 1455 (7.2) |
| Unknown | 13 229 (2.0) | 1048 (1.7) | 652 (1.8) | 2439 (2.1) | 370 (1.8) |
| Occupation | |||||
| Farming | 276 252 (41.6) | 31 355 (49.9) | 15 377 (43.4) | 52 730 (45.2) | 7885 (39.1) |
| Nonfarming | 374 310 (56.4) | 30 416 (48.4) | 19 419 (54.8) | 61 513 (52.7) | 11 934 (59.1) |
| Unknown | 13 229 (2.0) | 1048 (1.7) | 652 (1.8) | 2439 (2.1) | 370 (1.8) |
| Annual household income, yuana | |||||
| <10 000 | 95 939 (14.5) | 9785 (15.6) | 5273 (14.9) | 17 758 (15.2) | 2518 (12.5) |
| 10 000-50 000 | 362 481 (54.6) | 35 645 (56.7) | 19 404 (54.7) | 64 746 (55.5) | 10 670 (52.9) |
| >50 000 | 142 499 (21.5) | 11 413 (18.2) | 7729 (21.8) | 23 527 (20.2) | 5150 (25.5) |
| Unknown | 62 872 (9.5) | 5976 (9.5) | 3042 (8.6) | 10 651 (9.1) | 1851 (9.2) |
| Marital status | |||||
| Married | 637 608 (96.1) | 60 357 (96.1) | 33 930 (95.7) | 111 512 (95.6) | 19 308 (95.6) |
| Widowed, separated, divorced, or single | 18 460 (2.8) | 1816 (2.9) | 1165 (3.3) | 3683 (3.2) | 707 (3.5) |
| Unknown | 7723 (1.2) | 646 (1.0) | 353 (1.0) | 1487 (1.3) | 174 (0.9) |
| Health insurance status | |||||
| Insured | 646 926 (97.5) | 61 592 (98.0) | 34 586 (97.6) | 113 772 (97.5) | 19 788 (98.0) |
| Uninsured | 6096 (0.9) | 495 (0.8) | 312 (0.9) | 1008 (0.9) | 157 (0.8) |
| Unknown | 10 978 (1.7) | 744 (1.2) | 561 (1.6) | 1938 (1.7) | 244 (1.2) |
| Medical history | |||||
| Myocardial infarction | 1344 (0.2) | 234 (0.4) | 144 (0.4) | 625 (0.5) | 338 (1.7) |
| Stroke | 1993 (0.3) | 607 (1.0) | 378 (1.1) | 1906 (1.6) | 679 (3.4) |
| Diabetes | 47 632 (7.2) | 8498 (13.5) | 5024 (14.2) | 19 638 (16.8) | 4068 (20.1) |
| Cardiovascular risk factors | |||||
| Current smoking | 118 126 (17.8) | 10 742 (17.1) | 11 029 (31.1) | 30 759 (26.4) | 4876 (24.2) |
| Current alcohol use | 97 917 (14.8) | 10 355 (16.5) | 10 834 (30.6) | 32 105 (27.5) | 4297 (21.3) |
| Obesity | 70 161 (10.6) | 13 213 (21.0) | 9617 (27.1) | 36 293 (31.1) | 5771 (28.6) |
Abbreviations: IDH, isolated diastolic hypertension; ISH, isolated systolic hypertension; SDH, systolic-diastolic hypertension.
a
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