Table 4.

Comparison of gender preference during colonoscopy

Authors (yr)	Subjects	Setting	Genders	Population	Gender preference
Fidler et al[14], 2000	Patients undergoing colonoscopy	Endoscopy	Both	United Kingdom	Women (48%) and men (0%)
Varadarajulu et al[15], 2002	Patients undergoing colonoscopy	Endoscopy	Both	United States	Overall (26%): Women (45%) and men (4.3%). No difference post procedure
Menees et al[16], 2005	Subjects not scheduled	Clinics	Female	United States	44.4% expressed preference [endoscopist: Women (43%) and men (1.4%)]
Lee et al[17], 2008	Subjects not scheduled for colonoscopy	Clinics	Female	South Korea	45.5% expressed preference [endoscopist: Women (32.1%) and men (13.4%)]
Schneider et al[18], 2009	Patients undergoing colonoscopy	Endoscopy	Both	United States	Women (42%) and men (24%)
Zapatier et al[19], 2011	Patients not scheduled for colonoscopy	Clinics	Both	United States	Overall (25.7%): Women (30.8%) and men (20.4%); women: Hispanic (35%) and Caucasian; men (20.4%): Hispanic men
Shah et al[20], 2011	Patients not scheduled for colonoscopy	Primary clinics	Both	United States	Patients: Women (53%) and men (27.8%); Health care professionals: Women (43.1%) and men (26.1%)
Present study, 2012	Subjects not scheduled for colonoscopy	Clinics	Both	Southeast Asia	Endoscopists: Women (70%; women 67.7% and men 2.3%); men (62.8%; women 6.8% and 56% men)Assistants: Women (74.5%; women 73.4% and men 1.1%); men (58%; women 8.7% and 49.3% men)