Barrett’s esophagus and its correlation with gastroesophageal reflux in Chinese

Table 1 Clinical features of study population

	Number	Average age (yr)	Male:Female
Total	391	52.41	211:180
RE I	39	52.12	26:13
II	35	53.67	26:9
III	29	55.56	24:5
IM at GEJ	51	54.37	39:12
SSBE	43	54.71	34:9
LSBE	26	58.66	20:6
LGD	7	59.57	5:2
HGD	5	62.00	3:2
Cardiac adenocarcinoma	15	62.64	13:2

LGD: Low grade dysplasia, HGD: High grade dysplasia, IM: Intestinal metaplasia.

Table 2 Prevalence of IM and dysplasia at different SCJ positions

Position of SCJ	Number (male/female)	Age (yr)	IM (male/female)	Incidence of IM (%)	Dysplasia
					LGD	HGD
Group A	98 (61/37)	58.66	26 (20/6)	26.53	2	1
Group B	127 (63/64)	55.05	43 (25/18)	33.85	1	2
Group C	150 (71/79)	54.37	51 (19/32)	34.00	4	2
Total	375 (195/180)		120 (64/56)	32.00	7	5

The incidence between groups and between male and female of each group was compared by χ² test and P > 0.05.

Table 3 Different SCJ positions and RE

Position of SCJ	Number	RE I (%)	RE II (%)	RE III (%)	Total of RE (%)
Group A	98	13 (13.26)	19 (19.39)	24 (24.48)	56 (57.14)
Group B	127	17 (13.38)	10 (7.87)	2 (1.57)	29 (22.83)
Group C	150	9 (6.00)	6 (4.00)	3 (2.00)	18 (12.00)
The total	375	39 (10.40)	35 (9.33)	29 (7.33)	103 (27.46)

Analysis by trend χ² test, the incidence and degree of RE and the position of SCJ in groups C, B and A had a positive correlation. P < 0.05.