| in the mouth | 8 | location |
| such as gastroesophageal reflux disease | 4 | other |
| sometimes | 3 | temporal |
| acid → cause → heartburn | 117 |
| acid → lead to → heartburn | 9 |
| acid → cause → the pain of heartburn | 6 |
| acid → result in → heartburn | 5 |
| acid → include → heartburn | 5 |
| acid → cause → heartburn signs | 4 |
| acid → cause → heartburn symptoms | 4 |
| acid → cause → burning feeling of heartburn | 4 |
| acid → give → heartburn | 3 |
| acid → inflict → heartburn | 3 |
| negative | neutral | positive |
| 0.838 | 0.143 | 0.020 |
| Raw frequency | 160 |
| Normalized frequency | 0.939 |
| Modifier score | 0.600 |
| Perplexity | 374.381 |