| Variable Name |
| Variable Label |
| STUDYID |
| Study Identifier |
| DOMAIN |
| Domain Abbreviation |
| USUBJID |
| Unique Subject Identifier |
| SUSEQ |
| Sequence Number |
| SUTRT |
| Reported Name of Substance |
| SUCAT |
| Category of Substance Use |
| SUDOSE |
| Substance Use Consumption |
| SUDOSTXT |
| Substance Use Consumption Text |
| SUDOSU |
| Consumption Units |
| SUDOSFRQ |
| Use Frequency per Interval |
| SUROUTE |
| Route of Administration |
| SUSTDTC |
| Start Date/Time of Substance Use |
| SUENDTC |
| End Date/Time of Substance Use |
| SUSTDY |
| Study Day of Start of Substance Use |