1 = male
2 = female

1 = elementary
2 = secondary
3 = highschool
4 = college/university/postgraduate

1 = office staff
2 = Worker
3 = driver
4 = trader
5 = student
6 = Farmer
7 = other

1 = urban
2 = rural

1 = high-income
2 = upper-income
3 = middle-income
4 = low-income

1 = unmarried
2 = married
3 = Divorce/widow

1 = Yes
2 = no

1 = yes
2 = no

1 = at least 2
2 = 1 person

1 = Gonorrhoea
2 = Chlamydia
3 = Genital warts
4 = Syphilis
5 = HIV/AIDS

1 = Fail
2 = Succeed

1 = yes
2 = No

1 = 1 person
2 = At least 2 people

1 = At least 3 correct
2 = Fewer than 3 correct

1 = At least 3 complications
2 = Fewer than 3 complications

1 = Bad
2 = Medium
3 = Good
4 = Excellent