Table 1 Most frequent terms identified in the Term Identification Set
| Terms | Record Occurrence | % Record Occurrence |
|---|---|---|
| MeSH | ||
| Heart failure | 62 | 70.5% |
| Ventricular dysfunction, Left | 14 | 15.9% |
| Textwords/phrases | ||
| Heart failure | 77 | 87.5% |
| Congestive heart failure | 36 | 40.9% |
| New York Heart Association | 24 | 27.3% |
| Left ventricular ejection fraction | 23 | 26.1% |
| CHF | 20 | 22.7% |
| Chronic heart failure | 17 | 19.3% |
| Cardiomyopathy | 15 | 17.1% |
