Effect of comorbid gastroesophageal reflux disease on laryngopharyngeal reflux disease: Clinical characteristics and risk factors

Table 3 Assignment table

Factor	Variate	Assignment
Age (years)	X1	Continuous variable
Gender	X2	Male = 0, female = 1
Body mass index (kg/m2)	X3	Continuous variable
Marital status	X4	Married = 0, unmarried = 1
Smoking	X5	No = 0, yes = 1
Alcohol consumption	X6	No = 0, yes = 1
Eating habits in the 3-hour window before sleep	X7	No = 0, yes = 1
Gastroesophageal reflux disease	Y	No = 0, yes = 1