| Gender | Male | 2,058 | 68.6 |
| Female | 942 | 31.4 |
| Age(Mean = 34.5 years, SD = 15.31) | 10-19 years | 494 | 15.8 |
| 20-29 years | 999 | 35.4 |
| 30-39 years | 601 | 19.5 |
| 40-49 years | 338 | 11.0 |
| 50-59 years | 294 | 11.1 |
| 60-69 years | 223 | 6.2 |
| 70-79 years | 32 | 0.7 |
| 80 years or older | 19 | 0.3 |
| Variable | Category | n | % |
| Education level | No formal education | 148 | 4.9 |
| Elementary school | 304 | 10.1 |
| Middle school | 283 | 9.4 |
| High school | 1,991 | 66.4 |
| College degree or higher | 274 | 9.1 |
| Employment status | Employed | 906 | 30.2 |
| Unemployed | 2,094 | 69.8 |
| Disability type | Intellectual disability | 1,952 | 65.1 |
| Autism spectrum disorder | 1,048 | 34.9 |
| Disability severity | Level 1 (Severe) | 840 | 28.0 |
| Level 2 (Moderate) | 1,142 | 38.1 |
| Level 3 (Mild) | 943 | 31.4 |
| Other (registered after July 2019) | 75 | 2.5 |
| Primary caregiver | Father | 438 | 14.6 |
| Mother | 1,907 | 63.6 |
| Sibling | 225 | 7.5 |
| Grandparent | 51 | 1.7 |
| Spouse | 173 | 5.8 |
| Adult child | 70 | 2.3 |
| Other family member or relative | 66 | 2.2 |
| Non-family caregiver | 70 | 2.3 |
| Primary caregiver gender | Male | 720 | 24.0 |
| Female | 2,280 | 76.0 |
| Age of primary caregiver(M = 58.8 years, SD = 11.18) | Teens and 20s | 33 | 1.1 |
| 30s | 68 | 2.3 |
| 40s | 425 | 14.2 |
| 50s | 1,139 | 38.0 |
| 60s | 871 | 29.0 |
| 70s | 322 | 10.7 |
| 80 and above | 142 | 4.7 |
| Household monthly income(KRW) | Less than 500,000 | 21 | 0.7 |
| 500,000 to less than 1,000,000 | 171 | 5.7 |
| 1,000,000 to less than 1,500,000 | 372 | 12.4 |
| 1,500,000 to less than 2,000,000 | 281 | 9.4 |
| 2,000,000 to less than 3,000,000 | 454 | 15.1 |
| 3,000,000 to less than 4,000,000 | 481 | 16.0 |
| 4,000,000 to less than 5,000,000 | 309 | 10.3 |
| 5,000,000 to less than 6,000,000 | 414 | 13.8 |
| 6,000,000 to less than 7,000,000 | 154 | 5.1 |
| 7,000,000 to less than 10,000,000 | 163 | 5.4 |
| 10,000,000 or more | 60 | 2.0 |
| Missing/ No response | 110 | 3.7 |