Table 5.

The consistency of different number of biopsy specimen protocols (two pieces, three pieces, four pieces, respectively) compared with the standard 5 biopsy specimens protocol based on OLGIM stage.

	Stage0	StageI	StageII	StageIII	StageIV	Total	Consistency (%)	Kendall’s tau-b	P value
OLGIM
Five biopsy pieces (C1C2A3A1A2)	161	111	56	26	14	368	100-	1.000	—
Four biopsy pieces (C1C2A3A1)	197	85	49	22	14	368	86.96	0.876	<0.001
four biopsy pieces (C1C2A3A2)	167	113	48	26	14	368	96.47	0.967	<0.001
four biopsy pieces (C1C2A1A2)	180	113	47	21	7	368	86.41	0.892	<0.001
four biopsy pieces (C2A3 A1A2)	163	110	57	25	13	368	98.37	0.990	<0.001
four biopsy pieces (C1A3 A1A2)	164	108	66	25	5	368	94.02	0.981	<0.001
three biopsy pieces (C1C2A3)	214	81	42	19	12	368	79.62	0.810	<0.001
three biopsy pieces (C1C2A1)	235	81	37	10	5	368	66.30	0.721	<0.001
three biopsy pieces (C1C2A2)	191	114	36	20	7	368	81.52	0.839	<0.001
three biopsy pieces (C1A3A1)	205	78	59	21	5	368	79.89	0.854	<0.001
three biopsy pieces (C1A1A2)	184	116	50	15	3	368	82.07	0.860	<0.001
three biopsy pieces (C1A3A2)	170	110	58	25	5	368	90.49	0.950	<0.001
three biopsy pieces (C2A3A1)	199	86	48	24	11	368	85.33	0.870	<0.001
three biopsy pieces (C2A1A2)	183	111	50	18	6	368	84.51	0.881	<0.001
three biopsy pieces (C2A3A2)	170	111	49	27	11	368	94.29	0.952	<0.001
two biopsy pieces (C1A3)	225	74	47	17	5	368	73.37	0.764	<0.001
two biopsy pieces (C1A1)	256	72	31	6	3	368	61.41	0.639	<0.001
two biopsy pieces (C1A2)	195	116	40	14	3	368	77.72	0.809	<0.001
two biopsy pieces (C2A3)	218	79	42	20	9	368	77.72	0.791	<0.001
two biopsy pieces (C2A1)	241	79	34	10	4	368	64.67	0.699	<0.001
two biopsy pieces (C2A2)	194	113	37	18	6	368	79.89	0.825	<0.001

Abbreviations: C1, larger curvature of the corpus; C2, lesser curvature of the corpus; A3, incisura angularis; A1, larger curvature of the antrum; A2, lesser curvature of the antrum.