Table 1.

Demographic and clinical characteristics at initial visit

	n = 439	%
Gender
Male	224	51
Age
< 50	188	43
50–64	166	38
> 65	85	19
Country
Norway	134	31
Sweden	305	69
Endoscopic grading
Normal	199	45
Grade A	135	31
Grade B	105	24
Method of GERD diagnosisa
Endoscopy	240	55
pH monitoring	270	62
Symptom Association	95	22
Total proven diagnoses	354	81

^a Percentages do not add up to 100 due to multiple methods of diagnosis.