. Author manuscript; available in PMC: 2020 Feb 1.

Published in final edited form as: Amyotroph Lateral Scler Frontotemporal Degener. 2019 Jan 17;20(1-2):37–42. doi: 10.1080/21678421.2018.1510011

Table 2.

Inter and intra-rater reliability with intraclass correlation coefficients compute for voluntary cough spirometry measurements using average measures, absolute agreement, two-way random effects model (SPSS Version 24).

Average Measures	Inter/Intra-rater Reliability ICC		95% Confidence Interval		F Test with True Value 0
Average Measures	Inter/Intra-rater Reliability ICC		Lower Bound	Upper Bound	Value	df1	df2	Sig. (p=)
Inspiratory Phase Duration	Inter	.937	.724	.981	22.419	14	14	.000
Inspiratory Phase Duration	Intra	. 998	.962	.996	81.446	12	12	.000
Peak Inspiratory Flow Rate	Inter	.975	.884	.993	58.112	14	14	.000
Peak Inspiratory Flow Rate	Intra	.984	.941	.995	73.623	12	12	.000
Compression Phase Duration	Inter	.707	.045	.908	4.719	13	13	.004
Compression Phase Duration	Intra	.994	.980	.998	158.401	12	12	.000
Peak Expiratory Flow Rise Time	Inter	.777	.194	.930	6.409	13	13	.001
Peak Expiratory Flow Rise Time	Intra	.755	.251	.923	4.488	12	12	.007
Peak Expiratory Flow Rate	Inter	.964	.877	.988	33.617	14	14	.000
Peak Expiratory Flow Rate	Intra	.996	.988	.999	279.769	12	12	.000
Cough Volume Acceleration	Inter	.947	.815	.983	23.813	14	14	.000
Cough Volume Acceleration	Intra	.998	.994	.999	590.693	12	12	.000