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. 2019 Jan 19;3(3):120–126. doi: 10.1093/jcag/gwy074

Table 2.

Tukey’s post hoc testing between all four groups shows that the significant difference in the primary outcome is between EGD first with CO2 (group A1) and EGD first with air group (group A2)

EGD first with CO2
(Group A1)
EGD first with Air
(Group A2)
Colonoscopy first with CO2
(Group B1)
Colonoscopy first with Air
(Group B2)
P value
Aggregate patient comfort score with possible
Range 0–46
(Mean ± SD)
8.9 ± 7.1 12.8 ± 9.1 8.9 ± 5.5 10.8 ± 5.43 0.03

P =0.047

P>0.05 between all other groups