The Reliability of Pharyngeal High Resolution Manometry with Impedance for Derivation of Measures of Swallowing Function in Healthy Volunteers

Table 4

Test-retest change in measurements from Primary Study to Repeat Study in swallow function variables. Data are mean difference in the results of the six analysts with 95% confidence intervals of the difference shown in parentheses. Individual data for each study volunteer are shown (based on 1st analysis results only).

	Change from Primary Study to Repeat Study mean difference (5%, 95% confidence interval)
	Volunteer 1	Volunteer 2	Volunteer 3	Volunteer 4	Volunteer 5
Contractility
PhPP mmHg	84 (68, 99)	76 (65, 88)	−57 (−60, −63)	0 (−3, 2)	34 (24, 43)
PhCI mmHg⋅cm⋅s	−11 (−26, 5)	26 (16, 36)	−83 (−88, −77)	−63 (−69, −58)	−82 (−88, −77)
hPP mmHg	142 (96, 188)	143 (58, 227)	0 (−34, 35)	−3 (−6, 0)	88 (43, 132)
UBP mmHg	−21 (−22, −20)	1 (−3, 6)	0 (−1, 1)	−13 (−15, −10)	−8 (−14, −2)
UPP mmHg	−117 (−148, −85)	−88 (−99, −76)	−26 (−32, −20)	59 (−15, −11)	−43 (−50, −36)
UCI mmHg⋅cm⋅s	−89 (−108, −70)	−65 (−78, −52)	−55 (−67, −43)	83 (78, 87)	−4 (−26, 18)
Intrabolus pressure
PhIBP mmHg	3 (2, 3)	−5 (−6, 3)	−2 (−3, −2)	−4 (−4, −3)	9 (6, 12)
hIBP mmHg	−3 (−4, −2)	−3 (−4, −2)	0 (−2, 3)	−5 (−6, −5)	8 (4, 11)
UIRP mmHg	−1 (−2, 0)	−3 (−3, −3)	−4 (−4, −3)	−4 (−5, −3)	6 (5, 7)
Flow timing
PhDCL msec	−1 (−14, 11)	−13 (−24, 2)	54 (50, 58)	−5 (−7, −3)	−68 (−118, −20)
hDCL msec	−111 (−138, −83)	−59 (−99, −18)	27 (16, 38)	−10 (−22, 23)	−18 (−52, 17)
hFI msec	20 (2, 39)	5 (−19, 29)	−2 (−20, 16)	−19 (−34, −4)	130 (115, 144)
Global function
Swallow Risk Index	0 (0, 0)	−2 (−3, −1)	0 (0, 0)	−1 (−1, −1)	4 (3, 6)