Meta-Analysis
Copyright ©2013 Baishideng Publishing Group Co.
World J Gastroenterol. Nov 21, 2013; 19(43): 7804-7812
Published online Nov 21, 2013. doi: 10.3748/wjg.v19.i43.7804
Table 5 Pooled outcomes of random controlled studies and non-random controlled studies for postoperative physiological testing and operation-related data
Studies (n)Participants
Test of heterogeneity
MD (95%CI)P value for effect size
Dor groupControl groupI2P value
LES pressure
Dor-other group2474394% < 0.0001-1.02 (-9.90, 7.86)  0.821
Dor-no group2584365%0.09  1.97 (-0.93, 4.86)  0.182
DeMeester score
Dor-other group2403948%0.17-7.13 (-18.37, 4.12)  0.212
Dor-no group12118Not applicable-25.00 (-58.40, 8.40)    0.14
Percent total time pH ≤ 4
Dor-other group415414263%0.050.96 (0.00, 1.91)   0.051
Dor-no group12118Not applicable  -7.20 (-13.34, -1.06)    0.02
Surgery time
Dor-other group313812214%0.31 -5.37 (-7.71, -3.03) < 0.000012
Dor-no group239360%0.3524.14 (7.21, 41.08)0.0052
Hospital stay time
Dor-other group417117694%< 0.000010.10 (-0.59, 0.80)0.771
Dor-no group12221Not applicable0.00 (-0.15, 0.15)   1.00