Table 2.

Descriptive statistics for swallow timing measures in frames and derived in milliseconds.

Timing measure	Consistency	Event latency in frames				Event latency in milliseconds (at 29.975 frames/s)
		M	SD	95% confidence interval		M	SD	95% confidence interval
				Lower bound	Upper bound			Lower bound	Upper bound
Swallow Reaction Time (i.e., bolus passing the mandible to hyoid burst onset)	Thin	3.25	5.32	2.06	4.44	109	177	69	148
	Slightly thick	5.32	8.07	3.71	6.93	178	269	124	231
	Mildly thick	5.95	8.33	4.29	7.61	198	278	143	254
	Moderately thick	9.22	12.05	6.79	11.65	307	402	226	389
	Extremely thick	10.41	14.11	7.55	13.26	347	471	252	443
Hyoid burst onset to UES opening	Thin	3.48	1.45	3.16	3.81	116	48	105	127
	Slightly thick	3.70	1.82	3.33	4.06	123	61	111	135
	Mildly thick	3.83	1.74	3.48	4.18	128	58	116	139
	Moderately thick	4.55	1.65	4.21	4.88	152	55	141	163
	Extremely thick	4.65	1.52	4.34	4.95	155	51	145	165
UES opening duration	Thin	13.72	1.88	13.30	14.14	458	63	444	472
	Slightly thick	13.18	1.89	12.81	13.56	440	63	427	452
	Mildly thick	13.26	2.26	12.81	13.71	442	75	427	457
	Moderately thick	12.31	2.09	11.89	12.73	411	70	397	425
	Extremely thick	12.05	2.02	11.64	12.46	402	67	388	416
LVC Reaction Time (i.e., hyoid burst onset to LVC)	Thin	5.38	3.00	4.71	6.05	179	100	157	202
	Slightly thick	5.33	2.70	4.79	5.87	178	90	160	196
	Mildly thick	4.82	2.36	4.35	5.29	161	79	145	176
	Moderately thick	4.55	1.88	4.17	4.93	152	63	139	164
	Extremely thick	4.30	1.63	3.97	4.63	144	54	133	155
LVC duration	Thin	13.06	3.24	12.34	13.79	436	108	412	460
	Slightly thick	12.36	2.69	11.83	12.90	412	90	395	430
	Mildly thick	12.96	2.99	12.36	13.56	432	100	412	452
	Moderately thick	13.01	2.71	12.46	13.56	434	90	416	452
	Extremely thick	13.08	2.50	12.58	13.59	436	84	420	453

Note. UES = upper esophageal sphincter; LVC = laryngeal vestibule closure.