. 2007 Jan 4;125(1):15–21. doi: 10.1590/S1516-31802007000100004

Table 3. Means and standard deviations for the prolonged pre and postoperative esophageal pH measurements (Boix-Ochoa et al.²² parameters), for the patients in the Nissan fundoplication (NF) and vertical gastric plication (VGP) groups.

Measurements	NF group			VGP group
Measurements	pre-op	post-op		pre-op	post-op
Boix-Ochoa	53.93 ± 17.68	14.56 ± 23.80	^*p < 0.001	72.83 ± 26.99	36.38 ± 19.61	^*p = 0.041
% pH < 4	14.81 ± 5.69	4.33 ± 8.94	^*p = 0.002	25.73 ± 10.25	12.07 ± 7.38	^*p = 0.042
total number of gastroesophageal reflux episodes	11.28 ± 7.75	2.29 ± 3.46	^*p = 0.012	6.35 ± 4.36	4.04 ± 1.88	p = 0.273
number of gastroesophageal reflux episodes > 5 min	7.38 ± 2.38	2.89 ± 5.36	p = 0.083	9.83 ± 4.06	4.84 ± 3.92	p = 0.081
longer gastroesophageal reflux episodes	10.35 ± 11.25	2.02 ± 2.72	^*p = 0.044	16.17 ± 9.57	8.22 ± 6.25	p = 0.217

significant differences.

Table 3. Means and standard deviations for the prolonged pre and postoperative esophageal pH measurements (Boix-Ochoa et al.22 parameters), for the patients in the Nissan fundoplication (NF) and vertical gastric plication (VGP) groups.