1 = pakistan
2 = saudi arabia

1 = 13-16
2 = 17-20
3 = >21

1 = male
2 = Female

0 = no formal
1 = school
2 = college
3 = University

1 = labor
2 = government
3 = professional
4 = other

1 = <5
2 = 5-10
3 = 11-15
4 = >16

1 = yes
2 = no

1 = once daily
2 = twice
3 = thrice
4 = do not brush

1 = finger
2 = stick
3 = tooth brush
4 = charcoal

1 = less than a min
2 = 2 min
3 = 5 min
4 = i do not know

1 = keep mouth clean
2 = visit dr after every 6 month
3 = all of above

1 = in morning
2 = at night
3 = after every meal
4 = all of above

1 = parents
2 = teacher

1 = hearning loss
2 = blind
3 = IC, down syndrome

1 = class1
2 = class2
3 = class3

1 = excellent
2 = good
3 = fair
4 = poor

1 = low risk
2 = moderate risk
3 = high risk

1 = fluoride containing
2 = without fluoride
3 = i don not know