Table 1.

Methods of follow up in the low grade dysplasia (LGD) and no dysplasia groups

Method	LGD	No dysplasia
Personal interview	15	37
Patient questionnaires	1	12
Information from GP	7	18
Review of current case notes	3	17
Death certificate	3	13
Total traceable	29	97
Total non-traceable	1	1
Total	30	98