Gastroduodenal ulcer treated by pylorus and pyloric vagus-preservinggastrectomy

Table 4 Duodenogastric reflux (n)

Operation mode n		Reflux indexes grades (%)
		I < 5%	II -10%	III -20%	IV -30%	V -40%	VI > 40%	Total	%
PPVPG	84	6	0	0	0	0	0	6	7.1
B I	24	0	6	7	5	5	0	23	95.8
B II	20	0	0	5	6	4	5	20	100.0

Significantly different from groups PPVPG and B I and B II (P < 0.005, χ² = 99.6608). No marked difference between groups B I and B II (P > 0.05, χ² = 0.8536).