Table 1 Demographics of the study population
Total | High Income | Middle Income | Low Income | Medical aid beneficiaries | p-value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
N | (%) | N | (%) | N | (%) | N | (%) | N | (%) | ||
Total | 213,526 | 100.0 | 75,824 | 100.0 | 67,986 | 100.0 | 57,587 | 100.0 | 12,129 | 100.0 | |
Sex | < 0.01 | ||||||||||
Male | 109,520 | 51.3 | 38,193 | 50.4 | 35,781 | 52.6 | 29,922 | 52.0 | 5624 | 46.4 | |
Female | 104,006 | 48.7 | 37,631 | 49.6 | 32,205 | 47.4 | 27,665 | 48.0 | 6505 | 53.6 | |
Age | < 0.01 | ||||||||||
18–39 years old | 112,477 | 52.7 | 38,856 | 51.2 | 36,859 | 54.2 | 31,421 | 54.6 | 5341 | 44.0 | |
40–59 years old | 87,011 | 40.7 | 32,380 | 42.7 | 27,615 | 40.6 | 22,435 | 39.0 | 4581 | 37.8 | |
≥ 60 years old | 14,038 | 6.6 | 4588 | 6.1 | 3512 | 5.2 | 3731 | 6.5 | 2207 | 18.2 | |
Residential area | < 0.01 | ||||||||||
Seoul | 46,479 | 21.8 | 18,437 | 24.3 | 13,547 | 19.9 | 12,887 | 22.4 | 1608 | 13.3 | |
Metropolitan | 55,146 | 25.8 | 18,082 | 23.8 | 18,843 | 27.7 | 14,785 | 25.7 | 3436 | 28.3 | |
Gyeongi (near Seoul) | 46,648 | 21.8 | 19,376 | 25.6 | 13,980 | 20.6 | 11,722 | 20.4 | 1570 | 12.9 | |
Other | 65,253 | 30.6 | 19,929 | 26.3 | 21,616 | 31.8 | 18,193 | 31.6 | 5515 | 45.5 | |
CCI | < 0.01 | ||||||||||
0 | 152,769 | 71.5 | 53,448 | 70.5 | 49,286 | 72.5 | 42,998 | 74.7 | 7037 | 58.0 | |
1 | 45,286 | 21.2 | 16,948 | 22.4 | 14,276 | 21.0 | 11,037 | 19.2 | 3025 | 24.9 | |
2 and more | 15,471 | 7.2 | 5428 | 7.2 | 4424 | 6.5 | 3552 | 6.2 | 2067 | 17.0 | |
Physical disability severity | < 0.01 | ||||||||||
None | 204,796 | 95.9 | 74,312 | 98.0 | 66,308 | 97.5 | 55,322 | 96.1 | 8854 | 73.0 | |
Mild | 2745 | 1.3 | 307 | 0.4 | 320 | 0.5 | 343 | 0.6 | 1775 | 14.6 | |
Moderate and severe | 5985 | 2.8 | 1205 | 1.6 | 1358 | 2.0 | 1922 | 3.3 | 1500 | 12.4 | |
Diagnosis of IHD | < 0.01 | ||||||||||
Yes | 11,219 | 5.3 | 3858 | 5.1 | 3300 | 4.9 | 2934 | 5.1 | 1127 | 9.3 | |
Diagnosis of CVD (except stroke) | < 0.01 | ||||||||||
Yes | 2975 | 1.4 | 1010 | 1.3 | 878 | 1.3 | 726 | 1.3 | 361 | 3.0 | |
Number of diagnosis of MetS disease | < 0.01 | ||||||||||
0 | 132,969 | 62.3 | 47,425 | 62.5 | 43,270 | 63.6 | 36,336 | 63.1 | 5938 | 49.0 | |
1 | 45,916 | 21.5 | 16,722 | 22.1 | 14,330 | 21.1 | 11,956 | 20.8 | 2908 | 24.0 | |
2 | 23,992 | 11.2 | 8318 | 11.0 | 7343 | 10.8 | 6313 | 11.0 | 2018 | 16.6 | |
3 | 10,649 | 5.0 | 3359 | 4.4 | 3043 | 4.5 | 2982 | 5.2 | 1265 | 10.4 | |
Diagnosis of HTN | < 0.01 | ||||||||||
Yes | 31,422 | 14.7 | 10,406 | 13.7 | 9581 | 14.1 | 8646 | 15.0 | 2789 | 23.0 | |
Diagnosis of DM | < 0.01 | ||||||||||
Yes | 27,464 | 12.9 | 9,082 | 12.0 | 8260 | 12.1 | 7479 | 13.0 | 2643 | 21.8 | |
Diagnosis of dyslipidemia | < 0.01 | ||||||||||
Yes | 62,388 | 29.2 | 22,650 | 29.9 | 18,982 | 27.9 | 16,152 | 28.0 | 4604 | 38.0 | |
Stroke incidence | < 0.01 | ||||||||||
Yes | 4589 | 2.1 | 1304 | 1.7 | 1281 | 1.9 | 1236 | 2.1 | 768 | 6.3 | |