Table 1.

Comparison of the clinical and digital measurements by Bland-Altman analysis.

	Examiner	Clinical measurements minus histologic measurements			Digital measurements minus histologic measurements			p☨
		Bias* (mm)	LLA (mm)	ULA (mm)	Bias* (mm)	LLA (mm)	ULA (mm)
First round	Year 3	1.02	−0.83	2.86	0.33	−0.57	1.24	<0.01
	1	1.19	−1.20	3.58	0.24	−0.57	1.04	<0.01
	2	1.05	−0.27	2.37	0.54	−0.38	1.47	<0.01
	3	0.82	−1.23	2.86	0.30	−0.56	1.17	<0.01
	4	1.01	−0.28	2.31	0.25	−0.64	1.14	<0.01
	Year 2	1.24	−0.31	2.79	0.35	−0.58	1.28	<0.01
	5	1.46	0.03	2.89	0.28	−0.61	1.18	<0.01
	6	0.97	−0.37	2.30	0.43	−0.58	1.45	<0.01
	7	1.16	−0.70	3.02	0.36	−0.56	1.29	<0.01
	8	1.36	0.04	2.68	0.31	−0.54	1.16	<0.01
	Year 1	1.09	−0.91	3.09	−0.38	−2.16	1.39	<0.01
	9	1.19	−1.52	3.90	0.39	−0.52	1.30	<0.01
	10	0.94	−0.32	2.21	0.16	−0.80	1.11	<0.01
	11	1.36	−0.85	3.57	−1.27	−3.01	0.47	<0.01
	12	0.86	−0.27	2.00	−0.81	−1.75	0.14	<0.01
	Total	1.11	−0.69	2.92	0.10	−1.34	1.54	<0.01
Second round	Year 3	1.03	−0.42	2.49	0.25	−0.74	1.24	<0.01
	1	1.47	0.01	2.93	0.04	−1.03	1.11	<0.01
	2	1.23	0.06	2.39	0.33	−0.61	1.26	<0.01
	3	0.73	−0.65	2.12	0.28	−0.61	1.18	<0.01
	4	0.69	−0.48	1.87	0.35	−0.57	1.27	<0.01
	Year 2	1.09	−0.25	2.42	0.33	−0.55	1.20	<0.01
	5	1.31	0.00	2.62	0.19	−0.60	0.97	<0.01
	6	0.97	−0.27	2.21	0.35	−0.55	1.25	<0.01
	7	0.83	−0.57	2.23	0.31	−0.58	1.20	<0.01
	8	1.24	0.09	2.40	0.46	−0.39	1.30	<0.01
	Year 1	1.04	−0.45	2.54	−0.47	−2.55	1.61	<0.01
	9	1.58	−0.01	3.16	0.52	−0.35	1.39	<0.01
	10	1.03	−0.17	2.22	0.03	−0.90	0.96	<0.01
	11	0.83	−0.75	2.42	−1.64	−3.44	0.16	<0.01
	12	0.74	−0.15	1.63	−0.78	−1.72	0.17	<0.01
	Total	1.05	−0.37	2.48	0.04	−1.52	1.59	<0.01

^*Bias was estimated as the mean difference between the clinical/digital measurements and the histologic measurements.

LLA, lower limit of agreement (=mean – 1.96×standard deviation); ULA, upper limit of agreement (=mean + 1.96×standard deviation).

^☨Paired t-test.