| all_drugs | All drugs taken |
| asi | Did patient use intravenous drugs |
| demographics | Patient demographics |
| detox | Start and Stop of Detox |
| everybody | Everybody with any data |
| fagerstrom | Fagerstrom Test for Nicotine Dependence |
| first_survey | First Survey Date |
| meta_study_length | Metadata About Study Length |
| meta_substance_groups_uds | Metadata About UDS Groupings |
| pain | Self-Reported Pain |
| psychiatric | Psychiatric History |
| qol | Quality of Life |
| randomization | Randomization Data |
| rbs | Risk Behavior Survey |
| rbs_iv | Risk Behavior Survey IV drug use information |
| screening_date | Screening Date Information |
| sex | Sexual Activity in Risk Behavior Survey |
| site_masked | Site Regrouped |
| tlfb | Timeline Followback (TLFB) Drug Use Information |
| treatment | Amount of Study Drug Per Day |
| uds | Urine Drug Screening (UDS) Results |
| uds_temp | Urine Drug Screening (UDS) Temperature |
| visit | Patient Visit Data |
| withdrawal | Patient Withdrawal Symptoms Per Day |
| withdrawal_pre_post | Patient Withdrawal Symptoms Pre and Post Induction |