. Author manuscript; available in PMC: 2019 Mar 1.

Published in final edited form as: Appl Psychophysiol Biofeedback. 2018 Mar;43(1):57–73. doi: 10.1007/s10484-017-9382-0

Table 4.

Effect of Protocol and Site on PC₂₀FEV₁ and the Asthma Control Test

FACTORS	df	ASTHMA CONTROL TEST		PC₂₀FEV₁

		χ²	P	χ²	P
Protocol	1	0	n.s.	0	n.s.
Study condition * Protocol	1	0.72	n.s.	0.72	n.s.
Session * Protocol	1	0.01	n.s.	0.01	n.s.
Session * Study condition* Protocol	1	0.35	n.s.	0.35	n.s.

Site	1	0.01	n.s.	0.01	n.s.
Session * Site	1	2.24	n.s.	2.24	n.s.
Study condition * Site	1	2.3	n.s.	2.3	n.s.
Session * Study condition * Site	1	0.01	n.s.	0.01	n.s.