Table 3.

Age distribution and occurrence of risk factors among peptic ulcer patients and controls

	Women			Men
	Peptic ulcer (n = 344-362, %)	No peptic ulcer (n = 10 233-10 975, %)	P value	Peptic ulcer (n = 326-350, %)	No peptic ulcer (n = 5970-6667, %)	P value
Age group (yr)
25-29	8.5	28.7		4.0	22.6
35-39	19.5	23.4		8.5	23.2
45-49	25.3	24.3		26.8	25.2
55-59	46.7	23.6		60.7	29.0
Smoking
Current smoking, ≥ 5 cigarettes daily	29.7	16.6	< 0.001	37.7	22.8	< 0.001
Heavy drinking
> 175 g alcohol/wk	5.0	3.8	0.253
> 263 g alcohol/wk				10.3	7.7	0.080
Stress
Reeder points ≥ 12	32.9	20.9	< 0.001	32.8	22.8	< 0.001
Use of nonsteroidal anti-inflammatory drugs
At least 2 mo during the last year	33.2	16.2	< 0.001	21.9	9.3	< 0.001