TABLE 1.
Characteristics of the study (ATD) and control (non-ATD) populations.
| Variable | Study group (n = 206,514) | Control group (n = 206,514) | SMD |
| Sex | 0.00 | ||
| Male | 97,814 | 98,108 | |
| Female | 108,700 | 108,406 | |
| Age | 0.01 | ||
| < 30 | 129,133 | 129,800 | |
| 30–59 | 64,500 | 64,103 | |
| ≥ 60 | 12,881 | 12,611 | |
| ES | 0.00 | ||
| Low | 135,394 | 135,354 | |
| High | 71,120 | 71,160 | |
| Region | 0.00 | ||
| Rural | 101,145 | 101,035 | |
| Metro | 60,182 | 60,227 | |
| Seoul | 45,187 | 45,252 | |
| HTN | 0.01 | ||
| Yes | 17,480 | 17,096 | |
| No | 189,034 | 189,418 | |
| DM | 0.02 | ||
| Yes | 8,863 | 8,012 | |
| No | 197,651 | 198,502 | |
| CKD | 0.02 | ||
| Yes | 5,949 | 5,152 | |
| No | 200,565 | 201,362 | |
| GD/HT | 0.02 | ||
| Yes | 1,827 | 1,442 | |
| No | 204,687 | 205,072 | |
| RA | 0.02 | ||
| Yes | 6,367 | 5,580 | |
| No | 200,147 | 200,934 |
ATD, adenotonsillar disease; ES, economic status; HTN, hypertension; DM, diabetes mellitus; CKD, chronic kidney disease; GD, Graves’ disease; HT, Hashimoto’s thyroiditis; RA, rheumatoid arthritis; SMD, standardized mean difference.