Table 1.
General characteristics of newly-diagnosed diabetic patients (study participants) according to the proportion of days covered (PDC) (N = 65,067, % in column).
| N | Proportion of days covered (PDC) (2006–2007) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≥0.80 | 0.60–0.79 | 0.40–0.59 | 0.20–0.39 | <0.20 | |||||||
| N | % | N | % | N | % | N | % | N | % | ||
| Total (% in row) | 65,067 | 22,261 | 34.2 | 11,459 | 17.6 | 10,279 | 15.8 | 10,393 | 16.0 | 10,675 | 16.4 |
| Sex | |||||||||||
| Men | 39,808 | 13,227 | 59.4 | 7,014 | 61.2 | 6,416 | 62.4 | 6,474 | 62.3 | 6,677 | 62.6 |
| Women | 25,259 | 9,034 | 40.6 | 4,445 | 38.8 | 3,863 | 37.6 | 3,919 | 37.7 | 3,998 | 37.5 |
| Age | |||||||||||
| 40–49 | 18,752 | 5,634 | 25.3 | 3,555 | 31.0 | 3,079 | 30.0 | 3,213 | 30.9 | 3,271 | 30.6 |
| 50–59 | 22,173 | 7,844 | 35.2 | 3,934 | 34.3 | 3,558 | 34.6 | 3,429 | 33.0 | 3,408 | 31.9 |
| 60–69 | 16,524 | 6,191 | 27.8 | 2,766 | 24.1 | 2,503 | 24.4 | 2,478 | 23.8 | 2,586 | 24.2 |
| 70+ | 7,618 | 2,592 | 11.6 | 1,204 | 10.5 | 1,139 | 11.1 | 1,273 | 12.3 | 1,410 | 13.2 |
| Insurance type | |||||||||||
| The self-employed | 21,042 | 6,552 | 29.4 | 3,791 | 33.1 | 3,482 | 33.9 | 3,506 | 33.7 | 3,711 | 34.8 |
| Families of the self-employed | 8,713 | 2,990 | 13.4 | 1,551 | 13.5 | 1,379 | 13.4 | 1,406 | 13.5 | 1,387 | 13.0 |
| The employ insured | 13,586 | 4,734 | 21.3 | 2,453 | 21.4 | 2,081 | 20.3 | 2,160 | 20.8 | 2,158 | 20.2 |
| Dependents of the employ insured | 21,726 | 7,985 | 35.9 | 3,664 | 32.0 | 3,337 | 32.5 | 3,321 | 32.0 | 3,419 | 32.0 |
| Monthly contribution (KRW) | |||||||||||
| <20,000 | 9,021 | 2,900 | 13.0 | 1,647 | 14.4 | 1,489 | 14.5 | 1,446 | 13.9 | 1,539 | 14.4 |
| 20,000–39,999 | 15,817 | 5,205 | 23.4 | 2,837 | 24.8 | 2,511 | 24.4 | 2,594 | 25.0 | 2,670 | 25.0 |
| 40,000–59,999 | 12,435 | 4,231 | 19.0 | 2,151 | 18.8 | 2,003 | 19.5 | 1,989 | 19.1 | 2,061 | 19.3 |
| 60,000–79,999 | 10,326 | 3,593 | 16.1 | 1,819 | 15.9 | 1,577 | 15.3 | 1,615 | 15.5 | 1,722 | 16.1 |
| 80,000–99,999 | 6,848 | 2,447 | 11.0 | 1,194 | 10.4 | 1,022 | 9.9 | 1,050 | 10.1 | 1,135 | 10.6 |
| 100,000+ | 10,620 | 3,885 | 17.5 | 1,811 | 15.8 | 1,677 | 16.3 | 1,699 | 16.4 | 1,548 | 14.5 |
| Charlson Comorbidity Index (2002–2004) | |||||||||||
| 0 | 49,634 | 17,325 | 77.8 | 8,790 | 76.7 | 7,790 | 75.8 | 7,803 | 75.1 | 7,926 | 74.3 |
| 1 | 12,199 | 3,916 | 17.6 | 2,139 | 18.7 | 1,959 | 19.1 | 2,035 | 19.6 | 2,150 | 20.1 |
| 2+ | 3,234 | 1,020 | 4.6 | 530 | 4.6 | 530 | 5.2 | 555 | 5.3 | 599 | 5.6 |
| Disability | |||||||||||
| No | 61,218 | 21,029 | 94.5 | 10,820 | 94.4 | 9,631 | 93.7 | 9,781 | 94.1 | 9,957 | 93.3 |
| Yes | 3,849 | 1,232 | 5.5 | 639 | 5.6 | 648 | 6.3 | 612 | 5.9 | 718 | 6.7 |
| Medical institution type (2006–2007) | |||||||||||
| Tertiary hospital | 13,192 | 5,418 | 24.3 | 2,176 | 19.0 | 1,800 | 17.5 | 1,917 | 18.5 | 1,881 | 17.6 |
| Secondary hospital | 5,541 | 1,472 | 6.6 | 1,023 | 8.9 | 977 | 9.5 | 996 | 9.6 | 1,073 | 10.1 |
| Clinic | 41,209 | 13,275 | 59.6 | 7,417 | 64.7 | 6,847 | 66.6 | 6,729 | 64.8 | 6,941 | 65.0 |
| Public health center | 5,125 | 2,096 | 9.4 | 843 | 7.4 | 655 | 6.4 | 751 | 7.2 | 780 | 7.3 |
| Main active ingredient of oral hypoglycemic agent (2006–2007) | |||||||||||
| Biguanide | 14,605 | 5,189 | 23.3 | 2,502 | 21.8 | 2,166 | 21.1 | 2,297 | 22.1 | 2,451 | 23.0 |
| Sulfonylurea | 28,625 | 9,324 | 41.9 | 5,011 | 43.7 | 4,716 | 45.9 | 4,684 | 45.1 | 4,890 | 45.8 |
| Others | 21,837 | 7,748 | 34.8 | 3,946 | 34.4 | 3,397 | 33.1 | 3,412 | 32.8 | 3,334 | 31.2 |
| Hypertension (2005–2007) | |||||||||||
| No | 33,264 | 11,357 | 51.0 | 6,243 | 54.5 | 5,207 | 50.7 | 5,041 | 48.5 | 5,416 | 50.7 |
| Yes | 31,803 | 10,904 | 49.0 | 5,216 | 45.5 | 5,072 | 49.3 | 5,352 | 51.5 | 5,259 | 49.3 |
| Main outcome (2008–2017) | |||||||||||
| Death | 9,161 | 2,728 | 12.3 | 1,513 | 13.2 | 1,484 | 14.4 | 1,617 | 15.6 | 1,819 | 17.0 |
| Cerebrovascular disease | 5,286 | 1,584 | 7.1 | 906 | 7.9 | 829 | 8.1 | 948 | 9.1 | 1,019 | 9.6 |
| Myocardial infarction | 1,294 | 426 | 1.9 | 229 | 2.0 | 199 | 1.9 | 237 | 2.3 | 203 | 1.9 |
*The age, sex, disability, insurance type, and monthly contributions are taken from 2006.