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Contingency table depicting swallowing safety and efficiency profiles across bolus types. Inefficient=Normalized Residue Ratio scores of ≥0.07 and ≥0.20 for valleculae and piriform sinus, respectively. Unsafe= Penetration-aspiration score > 2.
| Safe | Unsafe | |
|---|---|---|
| Efficient | 16% (N=21) | 1% (N=1) |
| Inefficient | 51% (N=69) | 32% (N=43) |
