Pre-treatment urea breath test results predict the efficacy of Helicobacter pylori eradication therapy in patients with active duodenal ulcers

Table 1 Clinical characteristics of patients

	UBT result (‰)
	Low (< 16) n = 39	Intermediate (16-35) n = 36	High (> 35) n = 38
Gender
Male	24	26	23
Female	15	10	15
Age (year)
Mean ± SD	45.1 ± 10.6	44.6 ± 12.8	47.0 ± 13.2
Smoking
Yes	20	20	22
No	19	16	16
Ulcer size
< 1 cm	35	32	34
1-2 cm	4	3	4
> 2 cm	0	1	0
No. of ulcers
One	37	33	35
Two	2	3	3