Prospective Study
Copyright ©The Author(s) 2016.
World J Gastroenterol. Dec 28, 2016; 22(48): 10663-10672
Published online Dec 28, 2016. doi: 10.3748/wjg.v22.i48.10663
Table 1 Percentage missing values in different variables
VariableFemalesMales
Hard physical activity3928
Cigarette smoking75
Breathlessness1610
Constipation129
Type of bread1316
Highest educational level65