Table 1.

Characteristics of patients in the Northern Ireland Barrett’s esophagus register

Characteristic	No. (%), n = 9334
Sex
Female	3897 (41.8)
Male	5437 (58.2)
Mean age (SD, y)	60.9 (15.5)
Age group, y
<50	2336 (25.0)
50–59	1973 (21.1)
60–69	2065 (22.1)
70–79	1917 (20.5)
≥80	1043 (11.2)
Specialized intestinal metaplasia at index   biopsy
Absent	3388 (36.3)
Present	4307 (46.1)
Unknown	1639 (17.6)
Dysplasia at index biopsy
No dysplasia	8775 (94.0)
Low-grade dysplasia	374 (4.0)
High-grade dysplasia	96 (1.0)
Socioeconomic status (income deprivation   quintile)
Most-deprived quintile	1701 (18.2)
Quintile 2	1650 (17.7)
Quintile 3	1552 (16.6)
Quintile 4	1473 (15.8)
Least-deprived quintile	1360 (14.6)
Unknown	1598 (17.1)