Randomized controlled trial of uncut Roux-en-Y vs Billroth II reconstruction after distal gastrectomy for gastric cancer: Which technique is better for avoiding biliary reflux and gastritis?

Table 3 Perioperative stomach pH values

Time	Group U	Group B	P value
Preoperative	1.97 ± 0.19	1.99 ± 0.21
Day 1	6.38 ± 0.18	7.21 ± 0.36
Day 2	6.28 ± 0.29	7.35 ± 0.32
Day 3	6.48 ± 0.38	7.27 ± 0.38
Day 4	6.64 ± 0.22	7.27 ± 0.35
Day 5	6.56 ± 0.29	7.24 ± 0.42
			0.000

Values are presented as mean ± SD. Change of potential of hydrogen (pH) in the remnant stomach was recorded at 8:00 am on the day before surgery as well as 1–5 d after surgery.