Interexaminer reliability of cervical motion palpation using continuous measures and rater confidence levels

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Table 1

Interexaminer agreement

Set	Group description, sample size	Stratification state	Mean absolute difference	MAD 95% confidence interval		Standard error of mean	Intraclass correlation coefficient
Set	Group description, sample size	Stratification state	MAD, cm	lower	upper	SEM	ICC	σ_e
1	All ex, n=27	non-stratified	1.35	1.12	1.57	0.12	0.61	1.22
	All ex, n=14	confident	1.13	0.88	1.39	.0.13	0.68	1.03
	All ex, 13	not confident	1.57	1.19	1.95	0.19	0.52	1.44
2	Ex 1&2, n=29	non-stratified	1.35	0.88	1.82	0.24	0.56	1.33
	Ex 1&2, n=16	confident	1.05	0.61	1.48	0.22	0.64	0.99
	Ex 1&2, n=13	not confident	1.72	0.85	2.59	0.44	0.50	1.70
3	Ex 1&3, n=27	non-stratified	1.28	0.96	1.60	0.17	0.68	1.10
	Ex 1&3, n=16	confident	1.47	1.06	1.88	0.21	0.57	1.19
	Ex 1&3, n=11	not confident	1.00	0.50	1.50	0.26	0.76	0.85
4	Ex 2&3, 27	non-stratified	1.38	1.82	1.73	0.18	0.60	1.19
	Ex 2&3, n=21	confident	1.23	0.81	1.61	0.20	0.67	1.10
	Ex 2&3, n=6	not confident	1.90	1.21	2.58	0.35	0.41	1.51

Ex=examiner; σ_e = root mean square error (RMSE), cm