Table 1.

Functional Outcome Swallowing Scale (FOSS)¹⁶

Stage	Symptoms
0	Normal function and asymptomatic.
1	Normal function with episodic or daily symptoms of dysphagia.
2	Compensated abnormal function manifested by considerable dietary modifications or prolonged mealtime (without weight loss or aspiration).
3	Decompensated abnormal function with weight loss of 10% of body weigh over 6 months owing to dysphagia; or daily cough, gagging, or aspiration during meals.
4	Severely decompensated abnormal function with weight loss of 10% of body weight over 6 months owing to dysphagia; or severe aspiration with bronchopulmonary complications. Nonoral feeding for most nutrition.
5	Nonoral feeding for all nutrition.

^Ɨ(Adapted version provided by Rich, et al.¹³)