Table 1.
Top 30 keywords and corresponding article numbers.
| Ranking 1–10 | No. | Ranking 11–20 | No. | Ranking 21–30 | No. |
|---|---|---|---|---|---|
| Treatment | 11194 | Alcohol | 3793 | Therapy | 2794 |
| Study | 10138 | Opioid | 3647 | Behavior | 2751 |
| Addiction | 8134 | Dependence | 3236 | Response | 2598 |
| Drug | 7857 | Day | 3220 | Time | 2520 |
| Patient | 7278 | Finding | 3178 | Change | 2510 |
| Amyotrophic lateral sclerosis | 6833 | Cocaine | 2996 | Dose | 2475 |
| Use | 6727 | Level | 2969 | Model | 2475 |
| Effect | 6037 | Outcome | 2956 | Research | 2472 |
| Result | 4973 | Receptor | 2887 | Rat | 2425 |
| Group | 3844 | Detoxification | 2806 | Role | 2404 |