Table 2.

Prevalence of squamous mucosal histological abnormalities

	Negative pH score	Uncomplicated reflux disease	Complicated reflux disease
Basal cell hyperplasia (n=61)
None	10 (43%)	10 (56%)	8 (40%)
Mild	10 (43%)	6 (33%)	6 (30%)
Moderate	1 (4%)	1 (6%)	3 (15%)
Severe	2 (5%)	1 (6%)	3 (15%)
Total	23	18	20
Papillary zone lengthening (n=51)
Absent	13 (72%)	14 (87%)	12 (71%)
Present	5 (28%)	2 (13%)	5 (29%)
Total	18	16	17