Table 1.
Weighted Characteristics of Study Participants, NHANES 1999 to 2018
| Characteristics | 1999 to 2000 | 2001 to 2002 | 2003 to 2004 | 2005 to 2006 | 2007 to 2008 | 2009 to 2010 | 2011 to 2012 | 2013 to 2014 | 2015 to 2016 | 2017 to 2018 |
|---|---|---|---|---|---|---|---|---|---|---|
| No. of participants (unweighted) | 4186 | 4731 | 4523 | 4448 | 5650 | 5991 | 5262 | 5523 | 5404 | 5210 |
| Age, mean (SE), y | 46.4 (0.4) | 46.5 (0.5) | 46.6 (0.5) | 47.0 (0.7) | 47.0 (0.4) | 47.2 (0.5) | 47.6 (0.8) | 47.7 (0.4) | 48.2 (0.6) | 48.5 (0.5) |
| Women, n (%) | 2112 (51.1) | 2345 (51.3) | 2248 (51.3) | 2164 (50.9) | 2853 (51.4) | 3062 (51.2) | 2642 (51.5) | 2854 (51.4) | 2780 (51.3) | 2669 (51.3) |
| Race and ethnicity, n (%)* | n=4058 | n=4585 | n=4331 | n=4275 | n=5420 | n=5661 | n=5113 | n=5361 | n=5210 | n=4945 |
| Non‐Hispanic Asian | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 745 (5.3) | 630 (5.5) | 640 (6.0) | 748 (6.1) |
| Hispanic | 1384 (15.8) | 1185 (13.2) | 1031 (11.9) | 992 (11.7) | 1588 (13.9) | 1692 (14.5) | 1050 (14.6) | 1230 (15.1) | 1651 (15.7) | 1179 (16.5) |
| Non‐Hispanic Black | 820 (11.3) | 927 (11.0) | 899 (11.8) | 1045 (12.1) | 1171 (11.9) | 1082 (12.2) | 1387 (11.7) | 1127 (11.6) | 1145 (11.8) | 1225 (12.0) |
| Non‐Hispanic White | 1854 (73.0) | 2473 (75.8) | 2401 (76.3) | 2238 (76.2) | 2661 (74.2) | 2887 (73.3) | 1931 (68.3) | 2374 (67.8) | 1774 (66.5) | 1793 (65.4) |
| Education, n (%) | n=4172 | n=4723 | n=4514 | n=4441 | n=5644 | n=5977 | n=5258 | n=5518 | n=5401 | n=5198 |
| Less than 9th grade | 820 (8.0) | 687 (6.9) | 675 (6.9) | 561 (6.6) | 758 (6.9) | 744 (6.4) | 512 (5.9) | 436 (4.6) | 651 (6.1) | 450 (3.8) |
| 9th to 11th grade | 834 (16.9) | 768 (12.6) | 670 (11.6) | 673 (11.1) | 993 (13.7) | 965 (12.6) | 743 (11.0) | 753 (10.7) | 634 (8.5) | 590 (7.4) |
| High school graduate | 945 (26.2) | 1109 (25.3) | 1150 (27.3) | 1070 (25.2) | 1399 (25.5) | 1376 (22.9) | 1106 (20.3) | 1245 (21.8) | 1171 (20.7) | 1240 (27.2) |
| Some college or Associate degree | 927 (27.0) | 1225 (29.4) | 1222 (31.2) | 1267 (31.4) | 1443 (28.8) | 1676 (30.4) | 1575 (32.0) | 1699 (32.7) | 1599 (32.5) | 1669 (30.7) |
| College graduate or higher | 646 (21.9) | 934 (25.8) | 797 (23.0) | 870 (25.8) | 1051 (25.2) | 1216 (27.7) | 1322 (30.9) | 1385 (30.2) | 1346 (32.2) | 1249 (30.8) |
| Family income‐to‐poverty ratio, n (%) | n=3586 | n=4392 | n=4259 | n=4237 | n=5126 | n=5410 | n=4814 | n=5098 | n=4845 | n=4522 |
| <100% | 724 (15.4) | 757 (13.6) | 775 (12.7) | 705 (10.8) | 1056 (14.1) | 1208 (14.6) | 1226 (17.7) | 1138 (15.7) | 1087 (14.3) | 826 (12.5) |
| 100% to 299% | 1547 (38.0) | 1819 (35.1) | 1901 (38.4) | 1752 (35.7) | 2268 (36.9) | 2282 (35.6) | 1898 (35.3) | 2010 (35.9) | 2148 (37.2) | 2039 (36.2) |
| 300% to 499% | 719 (23.9) | 937 (25.5) | 892 (26.8) | 966 (27.5) | 914 (22.7) | 1023 (24.3) | 868 (22.5) | 1002 (22.5) | 821 (21.4) | 862 (24.4) |
| ≥500% | 596 (22.8) | 879 (25.8) | 691 (22.1) | 814 (26.0) | 888 (26.3) | 897 (25.5) | 822 (24.4) | 948 (25.9) | 789 (27.0) | 795 (27.0) |
| Type of health insurance, n (%)† | n=4090 | n=4626 | n=4461 | n=4430 | n=5635 | n=5971 | n=5235 | n=5493 | n=5330 | n=5134 |
| Private | 1918 (58.5) | 2233 (59.4) | 1833 (54.9) | 1935 (54.8) | 2300 (55.0) | 2332 (52.4) | 2112 (50.5) | 2340 (51.5) | 2102 (49.9) | 1847 (45.5) |
| Government | 1310 (22.9) | 1517 (23.8) | 1748 (27.0) | 1504 (26.3) | 1997 (25.5) | 2114 (26.8) | 1871 (29.5) | 1987 (30.4) | 2295 (36.6) | 2505 (40.6) |
| Uninsured | 862 (18.6) | 876 (16.8) | 880 (18.2) | 991 (19.0) | 1338 (19.5) | 1525 (20.8) | 1252 (20.1) | 1166 (18.1) | 933 (13.5) | 782 (13.9) |
| History of atherosclerotic cardiovascular disease, n (%)‡ | 437 (8.0) | 491 (7.8) | 577 (9.0) | 483 (8.2) | 602 (7.8) | 596 (7.5) | 489 (7.7) | 513 (7.9) | 537 (8.0) | 590 (9.0) |
NHANES indicates National Health and Nutrition Examination Survey; and SE, standard error.
*
Non‐Hispanic Asian was included in the demographic survey questionnaire starting in NHANES 2011–2012.
†
Government insurance included Medicare, Medi‐Gap, Medicaid, State Children's Health Insurance Program, military health care, Indian Health Service, and other government insurance.
‡
Atherosclerotic cardiovascular disease was defined as a self‐reported history of coronary heart disease, heart attack, stroke, or angina.