0 = female
1 = male

marital status
1 = single
2 = married/defacto
3 = divorced
4 = widowed

highest education level achieved
1 = primary school
2 = secondary school
3 = trade training/ post secondary training
4 = undergraduate degree
5 = postgraduate degree

general health
1 = very poor
10 = very good

current weight
1 = very underweight
10 = very overweight

do you smoke
1 = yes
2 = no

work night shift or rotating shifts
1 = yes
2 = no
3 = sometimes

satisfied with sleep amount
1 = very dissatisfied
10 = very satisfied

quality of sleep
1 = very poor
2 = poor
3 = fair
4 = good
5 = very good
6 = excellent

how stressed over last month?
1 = not at all
10 = extremely stressed

mood
1 = not at all
10 = to a great extent

prob stay asleep rec
0 = no
1 = yes

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

cigs per day gp3
1 = <= 5
2 = 6 - 15
3 = 16+

1 = <= 37
2 = 38 - 50
3 = 51+

0 = Not Selected
1 = Selected