Table 1. General characteristics on participants.
| Variables /Year | 2010 | 2011 | 2012 | 2013 | 2014 | |
|---|---|---|---|---|---|---|
| Gender | ||||||
| Male | 4,115 (45.9) | 3,867 (45.4) | 3,634 (45.1) | 3,634 (45.1) | 4,115 (45.9) | |
| Female | 4,843 (54.1) | 4,651 (54.6) | 4,424 (54.9) | 4,424 (54.9) | 4,843 (54.1) | |
| Total | 8,958 (100) | 8,518 (100.0) | 8,058 (100.0) | 8,018 (100.0) | 7,550 (100.0) | |
| Age | ||||||
| 1–9 | 1,142 (12.7) | 1,010 (11.9) | 865 (10.7) | 946 (11.8) | 856 (11.3) | |
| 10–18 | 1,076 (12.0) | 942 (11.1) | 900 (11.2) | 959 (12.0) | 718 (9.5) | |
| 19–29 | 846 (9.4) | 755 (8.9) | 706 (8.8) | 804 (10.0) | 690 (9.1) | |
| 30–39 | 1,342 (15.0) | 1,204 (14.1) | 1,085 (13.5) | 1,097 (13.7) | 1,032 (13.7) | |
| 40–49 | 1,279 (14.3) | 1,163 (13.7) | 1,067 (13.2) | 1,200 (15.0) | 1,035 (13.7) | |
| 50–59 | 1,245 (13.9) | 1,265 (14.9) | 1,187 (14.7) | 1,142 (14.2) | 1,134 (15.0) | |
| 60–69 | 1,081 (12.1) | 1,090 (12.8) | 1,090 (13.5) | 942 (11.7) | 1,010 (13.4) | |
| 70< | 947 (10.6) | 1,089 (12.8) | 1,158 (14.4) | 928 (11.6) | 1,075 (14.2) | |
| Total | 8,958 (100) | 8,518 (100.0) | 8,058 (100.0) | 8,018 (100.0) | 7,550 (100.0) | |
| Weight control | ||||||
| Yes | 3,129 (34.9) | 2,933 (34.4) | 2,602 (32.3) | 2,338 (29.2) | 2,307 (30.6) | |
| No | 604 (6.7) | 538 (6.3) | 447 (5.3) | 485 (6.0) | 462 (6.1) | |
| Non-applicable (<6 years) | 19 (0.2) | 41 (0.5) | 139 (1.7) | 186 (2.3) | 232 (8.7) | |
| No answer | 570 (6.4) | 623 (7.3) | 721 (8.9) | 741 (9.2) | 659 (8.7) | |
| System missing values | 4,636 (51.8) | 4,383 (51.8) | 4,149 (51.5) | 4,268 (53.2) | 3,890 (51.5) | |
| Total | 8,958 (100) | 8,518 (100.0) | 8,058 (100.0) | 8,018 (100.0) | 7,550 (100.0) | |