| in order to determine the cardiovascular diseases | 4 | purpose |
| from 1974 | 3 | temporal |
| in an open field | 3 | location |
| phase → be → conducted | 17 |
| phase → be → performed | 14 |
| negative | neutral | positive |
| 0.074 | 0.833 | 0.093 |
| Raw frequency | 31 |
| Normalized frequency | 0.347 |
| Modifier score | 0.425 |
| Perplexity | 127.704 |