Hemorrhagic gastric and duodenal ulcers after the Great East Japan Earthquake Disaster

Table 2 Characteristics of patients with gastric ulcers and duodenal ulcers

	2011 acute stage	2011 chronic stage	2010	P value
GUs
Number of patients (n)	9	11	20	NS
Average number of patient per month	9	2.2	3.3	< 0.05a
Age (yr)	68.3	65.5	69.2	NS
Male/female ratio	1.3 (5/4)	2.7 (8/3)	3 (15/5)	NS
Simple/multiple ratio	0.13 (1/8)	1.2 (6/5)	3 (15/5)	< 0.05a < 0.005d
Helicobacter pylori (+)/(-)	6/3	8/3	7/4 (unknown 9)	NS
DUs
Number of patients (n)	3	4	7	NS
Average number of patients per month	3	0.8	1.2	NS
Age (yr)	68.6	56.3	57.3	NS
Male/female ratio	2 (2/1)	3 (3/1)	2.5 (5/2)	NS
Simple/multiple ratio	0.5 (1/2)	3 (3/1)	1.3 (4/3)	NS
Helicobacter pylori (+)/(-)	0/3	1/3	4/2 (unknown 1)	< 0.05a

GUs: Gastric ulcers; DUs: Duodenal ulcers.

^aP < 0.05 between 2011 acute stage vs 2011 chronic stage; ^cP < 0.05,

^dP < 0.01 between 2011 acute stage vs 2010.