| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| Face to face with subject | Face to face with subject | Face to face with subject | ||
| With relatives/friend | With relatives/friend | With relatives/friend | ||
| Phone with subject | Phone with subject | Phone with subject | ||
| Letter from subject | Letter from subject | Letter from subject | ||
| Hospital/clinic records | Hospital/clinic records | Hospital/clinic records | ||
| Mail questionnaire | Mail questionnaire | Mail questionnaire | ||
| Research notes/records | Research notes/records | Research notes/records | ||
| Other | Other | Other | ||
| Check if subject died | Check if subject died | Check if subject died |