From: The incidence and analysis of ipsilateral occult hernia in patients undergoing hernia repair: a single institution retrospective study of 1066 patients
Occult hernia
Non-occult hernia
χ2 value
P value
EHS group (open)
40
353
χ2 = 2.62
P>0.05
EHS group (Laparoscopic)
27
334
χ2 = 0.14
EHS group (total)
67
687
χ2 = 1.35
NEHS group (open)
21
291