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. 2022 Aug 25;19(8):e1004064. doi: 10.1371/journal.pmed.1004064

Table 1. The characteristics of participants enrolled in the 5 CCDRFS surveys during 2007–2018. Values are numbers (percentages).

Men Women
2007 (N = 22,997) 2010 (N = 41,353) 2013 (N = 66,021) 2015 (N = 78,538) 2018 (N = 69,696) 2007 (N = 25,683) 2010 (N = 49,323) 2013 (N = 89,949) 2015 (N = 90,754) 2018 (N = 90,254)
Age, years
 18–19 402 (1.7) 1,254 (3.0) 689 (1.0) 596 (0.6) 427 (0.6) 460 (1.8) 1,278 (2.6) 568 (0.6) 504 (0.6) 281 (0.3)
 20–24 1,156 (5.0) 2,940 (7.1) 2,423 (3.7) 2,616 (2.7) 1,331 (1.9) 1,295 (5.0) 2,872 (5.8) 2,431 (2.7) 2,950 (3.3) 1,657 (1.8)
 25–29 1,487 (6.5) 3,017 (7.3) 3,581 (5.4) 4,572 (4.7) 2,513 (3.6) 1,728 (6.7) 3,288 (6.7) 4,220 (4.7) 6,018 (6.6) 3,716 (4.1)
 30–39 5,439 (23.7) 7,964 (19.3) 9,641 (14.6) 10,456 (14.3) 7,621 (10.9) 6,312 (24.6) 9,858 (20.0) 12,867 (14.3) 12,674 (14.0) 10,861 (12.0)
 40–49 5,810 (25.3) 10,875 (26.3) 17,280 (26.2) 18,938 (28.9) 14,104 (20.2) 6,525 (25.4) 13,840 (28.1) 25,974 (28.9) 22,777 (25.1) 19,308 (21.4)
 50–59 5,470 (23.8) 9,286 (22.4) 17,784 (26.9) 21,203 (28.5) 20,626 (29.6) 5,764 (22.4) 11,548 (23.4) 25,657 (28.5) 24,553 (27.1) 27,628 (30.6)
 60–69 3,233 (14.1) 6,035 (14.6) 14,623 (22.1) 20,157 (20.3) 23,074 (33.1) 3,599 (14.0) 6,639 (13.5) 18,232 (20.3) 21,278 (23.4) 26,803 (29.7)
Areas
 Urban 8,607 (37.4) 15,832 (38.3) 25,660 (38.9) 32,241 (41.8) 30,676 (44.0) 10,399 (40.5) 19,946 (40.4) 37,643 (41.8) 39,065 (43.1) 42,063 (46.6)
 Rural 14,390 (62.6) 25,521 (61.7) 40,361 (61.1) 46,297 (58.2) 39,020 (56.0) 15,284 (59.5) 29,377 (59.6) 52,306 (58.2) 51,689 (56.9) 48,191 (53.4)
Region
 North 3,343 (14.5) 5,715 (13.8) 9,425 (14.3) 11,177 (15.3) 9,966 (14.3) 3,664 (14.3) 7,158 (14.5) 13,787 (15.3) 13,228 (14.6) 13,488 (14.9)
 Northeast 2,458 (10.7) 4,649 (11.2) 6,741 (10.2) 7,401 (9.6) 6,509 (9.3) 2,725 (10.6) 5,523 (11.2) 8,675 (9.6) 8,575 (9.5) 8,689 (9.6)
 East 5,709 (24.8) 10,008 (24.2) 16,746 (25.4) 19,792 (24.1) 17,462 (25.1) 6,400 (24.9) 11,790 (23.9) 21,702 (24.1) 22,558 (24.9) 22,237 (24.6)
 Middle 2,975 (12.9) 5,513 (13.3) 7,933 (12.0) 9,619 (13.0) 8,692 (12.5) 3,482 (13.6) 6,728 (13.6) 11,726 (13.0) 11,430 (12.6) 11,761 (13.0)
 South 2,037 (8.9) 3,590 (8.7) 6,614 (10.0) 8,081 (10.0) 6,937 (10.0) 2,234 (8.7) 4,125 (8.4) 8,992 (10.0) 9,260 (10.2) 9,330 (10.3)
 Southwest 3,597 (15.6) 6,862 (16.6) 9,493 (14.4) 12,008 (15.0) 10,548 (15.1) 4,078 (15.9) 7,901 (16.0) 13,498 (15.0) 14,156 (15.6) 13,153 (14.6)
 Northwest 2,878 (12.5) 5,016 (12.1) 9,069 (13.7) 10,460 (12.9) 9,582 (13.7) 3,100 (12.1) 6,098 (12.4) 11,569 (12.9) 11,547 (12.7) 11,596 (12.9)
Education
 Not formal/primary school 8,708 (37.9) 13,802 (33.4) 24,203 (36.7) 30,045 (38.3) 26,158 (37.6) 12,771 (49.7) 23,285 (47.2) 46,756 (52.0) 47,788 (52.7) 47,126 (52.2)
 Secondary school 8,447 (36.7) 15,600 (37.7) 25,453 (38.6) 29,538 (37.6) 26,525 (38.0) 7,420 (28.9) 14,661 (29.7) 26,298 (29.2) 25,327 (27.9) 25,392 (28.1)
 High school 4,016 (17.5) 7,903 (19.1) 11,147 (16.9) 12,525 (16.0) 11,543 (16.5) 3,912 (15.2) 7,567 (15.3) 11,549 (12.8) 10,556 (11.6) 10,910 (12.1)
 College/university 1,826 (7.9) 4,048 (9.8) 5,218 (7.9) 6,430 (8.2) 5,470 (7.8) 1,580 (6.2) 3,810 (7.7) 5,346 (5.9) 7,083 (7.8) 6,826 (7.6)
Occupation
 Agriculture 11,180 (48.6) 20,910 (50.6) 34,321 (52.0) 38,042 (48.4) 33,557 (48.1) 12,508 (48.7) 22,461 (45.5) 40,599 (45.1) 39,409 (43.4) 37,252 (41.3)
 Manufacture 2,343 (10.2) 2,635 (6.4) 4,857 (7.4) 4,952 (6.3) 3,776 (5.4) 1,013 (3.9) 1,085 (2.2) 2,562 (2.8) 2,127 (2.3) 1,870 (2.1)
 Service provider 1,335 (5.8) 2,531 (6.1) 3,303 (5.0) 4,480 (5.7) 3,755 (5.4) 1,867 (7.3) 2,999 (6.1) 4,399 (4.9) 5,564 (6.1) 4,729 (5.2)
 Managers/professionals 2,740 (11.9) 5,993 (14.5) 8,036 (12.2) 9,121 (11.6) 6,974 (10.0) 2,037 (7.9) 5,007 (10.2) 6,985 (7.8) 7,110 (7.8) 6,572 (7.3)
 Others 2,354 (10.2) 3,431 (8.3) 6,846 (10.4) 9,645 (12.3) 8,482 (12.2) 2,316 (9.0) 2,442 (5.0) 5,223 (5.8) 6,660 (7.3) 6,535 (7.2)
 Unemployed/students 1,593 (6.9) 3,689 (8.9) 5,294 (8.0) 7,243 (9.2) 7,561 (10.8) 3,569 (13.9) 11,519 (23.4) 23,777 (26.4) 22,630 (24.9) 23,925 (26.5)
 Retired 1,452 (6.3) 2,164 (5.2) 3,364 (5.1) 5,055 (6.4) 5,591 (8.0) 2,373 (9.2) 3,810 (7.7) 6,404 (7.1) 7,254 (8.0) 9,371 (10.4)
Self-reported NCDs
At least 1 of diseases 3,206 (13.9) 7,370 (17.8) 14,317 (21.7) 17,056 (21.7) 19,668 (28.2) 3,702 (14.4) 8,667 (17.6) 19,512 (21.7) 18,957 (20.9) 23,558 (26.1)
Hypertension 2,150 (9.4) 5,168 (12.5) 10,140 (15.4) 10,854 (13.8) 12,283 (17.6) 2,828 (11.0) 6,669 (13.5) 14,805 (16.5) 13,548 (14.9) 16,303 (18.1)
Diabetes 441 (1.9) 1,656 (4.0) 3,383 (5.1) 2,943 (3.7) 4,515 (6.5) 513 (2.0) 1,844 (3.7) 4,925 (5.5) 3,779 (4.2) 6,002 (6.7)
Myocardial infarction 128 (0.6) 217 (0.5) 573 (0.9) 665 (0.8) 825 (1.2) 207 (0.8) 270 (0.5) 655 (0.7) 600 (0.7) 748 (0.8)
Stroke 241 (1.1) 260 (0.6) 1,248 (1.9) 2,590 (3.3) 3,468 (5.0) 205 (0.8) 226 (0.5) 1,248 (1.4) 2,366 (2.6) 3,644 (4.0)
COPD 785 (3.4) 1,276 (3.1) 2,052 (3.1) 4,298 (5.5) 4,461 (6.4) 610 (2.4) 1,075 (2.2) 1,934 (2.2) 3,464 (3.8) 3,873 (4.3)

NCDs refer to hypertension, diabetes, myocardial infarction, stroke, and COPD.

CCDRFS, China Chronic Disease and Risk Factor Surveillance; COPD, chronic obstructive pulmonary disease; NCD, noncommunicable disease.