Table 1.
General Characteristics of Study Subjects
| Variable | Cases (n=234) | Patient-controls (n=234) | Healthy-controls (n=234) | p-value |
|---|---|---|---|---|
| Sex | ||||
| Male | 127 (54.3) | 127 (54.3) | 127 (54.3) | 1.000 |
| Female | 107 (45.7) | 107 (45.7) | 107 (45.7) | |
| Age group | ||||
| 20–39 | 12 (5.1) | 14 (6.0) | 11 (4.7) | 0.858 |
| 40–49 | 31 (13.2) | 37 (15.8) | 44 (18.8) | |
| 50–59 | 73 (31.2) | 75 (32.0) | 73 (31.2) | |
| 60–69 | 75 (32.1) | 69 (29.5) | 72 (30.8) | |
| ≥70 | 43 (18.4) | 39 (16.7) | 34 (14.5) | |
| Education | ||||
| <High school | 111 (49.6) | 129 (56.6) | 56 (24.0) | <0.001 |
| High school | 80 (35.7) | 55 (24.1) | 76 (32.6) | |
| ≥College | 33 (14.7) | 44 (19.3) | 101 (43.4) | |
| Area of study hospital | ||||
| Busan | 64 (27.3) | 64 (27.3) | 64 (27.3) | 1.000 |
| Gyeongnam | 109 (46.6) | 109 (46.6) | 109 (46.6) | |
| Jeonnam | 61 (26.1) | 61 (26.1) | 61 (26.1) | |
Data are presented as number (%).