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Variables and their count of appearance in the 30 actual explanations
| Variable | Count |
|---|---|
| Lungs status | 30 |
| Headache | 30 |
| pO2 (arterial blood gas) | 23 |
| RR (respiratory rate) | 21 |
| Prior episodes of pneumonia | 18 |
| Hgb (hemoglobin) | 18 |
| Glu (glucose) | 17 |
| BP systolic | 16 |
| Age | 5 |
| Sweating | 1 |
| Confusion | 1 |
