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Top 10 keywords in terms of frequency regarding AS clinical trials.
| Rank | Keyword | Occurrences | Total link strength |
|---|---|---|---|
| 1 | double blind | 373 | 2294 |
| 2 | rheumatoid arthritis | 345 | 1859 |
| 3 | efficacy | 292 | 1853 |
| 4 | placebo controlled trial | 243 | 1594 |
| 5 | infliximab | 242 | 1581 |
| 6 | safety | 221 | 1437 |
| 7 | etanercept | 199 | 1328 |
| 8 | psoriatia arthritis | 161 | 927 |
| 9 | therapy | 159 | 875 |
| 10 | disease activity | 157 | 893 |
