Table 2 Demographic characteristics and hypertension prevalence of study population in China, 2011–2018 [n(%) /mean(sd)]

Total

16,970

4283 (25.2%)

17,557

5180 (29.5%)

16,102

4810 (29.9%)

19,732

6496 (32.9%)

Age (years)

 45–54

6144 (36.2%)

1046 (17.0%)

5801 (33.0%)

1155 (19.9%)

5398 (33.5%)

960 (17.8%)

5665 (29.6%)

1168 (20.6%)

 55–64

6282 (37.0%)

1666 (26.5%)

6513 (37.1%)

1959 (30.1%)

5496 (34.1%)

1668 (30.3%)

6260 (32.7%)

2033 (32.5%)

 65–74

3087 (18.2%)

1039 (33.7%)

3542 (20.2%)

1386 (39.1%)

3590 (22.3%)

1466 (40.8%)

4935 (25.8%)

2091 (42.4%)

 75 and above

1457 (8.6%)

532 (36.5%)

1701 (9.7%)

680 (40.0%)

1618 (10.0%)

716 (44.3%)

2285 (11.9%)

1063 (46.5%)

\({\chi }^{2}\)

439.3***

505.2***

742.8***

775.9***

Sex

 Male

8288 (48.8%)

1959 (23.6%)

8504 (48.4%)

2403 (28.3%)

7770 (48.3%)

2206 (28.4%)

9304 (47.2%)

3037 (32.6%)

 Female

8682 (51.2%)

2324 (26.8%)

9053 (51.6%)

2777 (30.7%)

8332 (51.7%)

2604 (31.3%)

10,428 (52.8%)

3459 (33.2%)

\({\upchi }^{2}\)

22.0***

12.3***

15.7***

0.6

Marital status

 Married or Partnered

13,586 (80.1%)

3364 (24.8%)

14,206 (80.9%)

4097 (28.8%)

13,023 (80.9%)

3764 (28.9%)

16,800 (85.1%)

5285 (31.5%)

 Unmarried and Others

3383 (19.9%)

918 (27.1%)

3351 (19.1%)

1083 (32.3%)

3078 (19.1%)

1045 (34.0%)

2932 (14.9%)

1211 (41.3%)

\({\upchi }^{2}\)

8.1**

15.8***

30.3***

109.6***

Education

 Primary school and below

11,301 (66.6%)

2908 (25.7%)

11,615 (66.2%)

3554 (30.6%)

10,919 (67.9%)

3300 (30.2%)

12,923 (65.5%)

4413 (34.1%)

 Secondary school

5302 (31.3%)

1263 (23.8%)

5585 (31.8%)

1511 (27.1%)

4824 (30.0%)

1397 (29.0%)

6383 (32.3%)

1949 (30.5%)

 College and above

361 (2.1%)

108 (29.9%)

355 (2.0%)

114 (32.1%)

343 (2.1%)

113 (32.9%)

426 (2.2%)

134 (31.5%)

\({\upchi }^{2}\)

11.3**

24.0***

4.1

25.7***

Residence status

 Rural

9774 (57.6%)

2241 (22.9%)

10,065 (57.5%)

2777 (27.6%)

8424 (55.2%)

2418 (28.7%)

11,054 (58.1%)

3516 (31.8%)

 Urban

3814 (22.5%)

1250 (32.8%)

4060 (23.2%)

1445 (35.6%)

3656 (24.0%)

1231 (33.7%)

3966 (20.8%)

1491 (37.6%)

 Rural-to-urban

3369 (19.9%)

789 (23.4%)

3390 (19.4%)

944 (27.8%)

3185 (20.9%)

873 (27.4%)

4005 (21.1%)

1316 (32.9%)

\({\upchi }^{2}\)

148.3***

94.5***

39.6***

44.4***

Health insurance

 None

1119 (6.6%)

243 (21.7%)

681 (3.9%)

178 (26.1%)

1331 (8.6%)

390 (29.3%)

593 (3.0%)

169 (28.5%)

 UEBMI

1746 (10.3%)

587 (33.6%)

2034 (11.7%)

724 (35.6%)

1567 (10.1%)

527 (33.6%)

2549 (12.9%)

934 (36.6%)

 URRBMI

13,129 (77.7%)

3165 (24.1%)

13,825 (79.4%)

3939 (28.5%)

11,416 (73.5%)

3355 (29.4%)

15,277 (77.4%)

4965 (32.5%)

 Others

904 (5.3%)

270 (29.9%)

875 (5.0%)

287 (32.8%)

1228 (7.9%)

372 (30.3%)

1311 (6.6%)

426 (32.5%)

\({\upchi }^{2}\)

91.5***

51.4***

12.6**

22.6***

Socioeconomic group

 Quintile1 (lowest)

2855 (20.0%)

671 (23.5%)

2326 (20.0%)

669 (28.8%)

2183 (20.0%)

638 (29.2%)

3301 (19.7%)

1025 (31.1%)

 Quintile2

2855 (20.0%)

649 (22.7%)

2326 (20.0%)

663 (28.5%)

2182 (20.0%)

629 (28.8%)

3411 (20.4%)

1112 (32.6%)

 Quintile3

2855 (20.0%)

726 (25.4%)

2329 (20.0%)

633 (27.2%)

2182 (20.0%)

585 (26.8%)

3427 (20.5%)

1108 (32.3%)

 Quintile4

2854 (20.0%)

735 (25.8%)

2327 (20.0%)

690 (29.7%)

2182 (20.0%)

669 (30.7%)

3378 (20.2%)

1171 (34.7%)

 Quintile5 (highest)

2853 (20.0%)

820 (28.7%)

2322 (20.0%)

711 (30.6%)

2181 (20.0%)

647 (29.7%)

3224 (19.3%)

1098 (34.1%)

\({\upchi }^{2}\)

33.1***

7.5

8.5

12.5*