(c)

Visuoperceptual variable	Intrarater test-retest reliability		Interrater reliability
	Cohen's Kappa		Cohen's Kappa
	Rater 1	Rater 2	Rater 1-2
Preswallow anterior spill	—	—	—
Preswallow posterior spill	1.0	1.0	—
Lingual pumping	1.0	1.0	0.6
Swallow hesitancy	1.0	—	—
Piecemeal deglutition	1.0	1.0	0.9
Delayed initiation pharyngeal reflex	0.8	1.0	0.3
Postswallow oral residue	0.6	0.7	—
Postswallow vallecular pooling	0.9	0.9	0.6
Postswallow pyriform sinus pooling	0.8	1.0	0.6
Penetration aspiration [20]	1.0	—	—