High (24 mg/ml) Vs Low Cond (6mg/ml)
1 = High 24mg/ml
2 = Low 6mg/ml

Morning, Lunch or Afternoon session under high strength
1 = 9am-12pm slot
2 = 12-1pm slot
3 = 1-4pm slot

1 = Male
2 = Female

1 = White
2 = Black Afro-Caribbean
3 = Mixed race
4 = Asian (indian/Pakistani/Bangladeshi)
5 = North/South East Asian (Chinese)
6 = Other

1 = Employed
2 = Non-employed
3 = Self-employed
4 = Studying

Highest_Qualification
1 = GCSEs or equivalent
2 = A-levels or equivalent
3 = Undergraduate study (level 5 to 6)
4 = Postgraduate study (Level 7 & above)

Device used the most
1 = disposable non-rechargeable
2 = Rechargeable stick-like, cigalike or cartomisers
3 = Rechargeable starter kit
4 = Rechargeable non-cigalike with fluid
5 = Rechargeable non-cigalike with fluid starter kit
6 = Modular system
7 = E-cigar

What strength do you use the most
0 = 0mg/ml
1 = 4mg/ml
2 = 6mg/ml
3 = 8 mg/ml
4 = 10mg/ml
5 = 11 mg/ml
6 = 15 mg/ml
7 = 16 mg/ml
8 = 18 mg/ml
9 = 24 mg/ml
10 = 30 mg/ml
11 = 36 mg/ml
12 = Higher than 36mg/ml
13 = Not known

1 = Tobacco
2 = Mint/Menthol
3 = Fruit
4 = Coffee
5 = Vanilla
6 = RY4
7 = chocolate
8 = Cinnamon
9 = Tea
10 = Alcohol related
11 = Other

How soon after you wake up do you use your ecig
0 = After 60 minutes
1 = 31 - 60 minutes
2 = 6 - 30 minutes
3 = Within 5 minutes

Do you find it difficult to refrain from using your e-cig in places where it is forbidden
0 = No
1 = Yes

Which puffs on your e-cig would you hate most to give up
0 = Any other one
1 = First ones in the morning

Please rate your addiction on a scale of 0 to 100
1 = 0-20
2 = 21-40
3 = 41-60
4 = 61-80
5 = 81-100

For you stopping using the e-cig for good would be
1 = Very easy
2 = Fairly easy
3 = Fairly difficult
4 = Very difficult
5 = Impossible

How much of the time have you felt the urge to vape
0 = Not at all
1 = A little of the time
2 = Some of the time
3 = A lot of the time
4 = Almost all the time
5 = All the time

How strong have the urges to vape been
0 = No urges
1 = Slight
2 = Moderate
3 = Strong
4 = Very strong
5 = Extremely Strong

Since you started using the e-cig, have you attempted to cut down the amount that you use it
0 = Yes
1 = No

If yes, in you attempt to cut down, how succesful have you been
1 = Extremely successful: I have stopped using it completely now
2 = Very successful: I only use it occasionally now
3 = Quite successful: I uste it much less that I did initially
4 = NOt very successful: I have only cut down slightly
5 = Unsuccessful: My use has not changed
6 = Very Unsuccessful: I use it more than I did initially

Is it likely that in one month now, you will have stopped using the e-cig
1 = Very likely
2 = Rather likely
3 = Rather unlikely
4 = Very unlikely

How strong is your urge to vape right now at baseline under 24mg/ml
1 = Not at all
4 = Moderately strong
7 = Extremely strong

High condition: MPSS depression rating at baseline
1 = Not at all
2 = Slightly
3 = Somewhat
4 = Very
5 = Extremely

High condition: MPSS irritability rating at 30 mins
1 = Not at all
2 = Sligtly
3 = Somewhat
4 = Very
5 = Extremely

High condition: MPSS depression rating at 60 mins
1 = Not at all
2 = Somewhat
3 = Somewhat
4 = Very
5 = Extremely

Low condition: MPSS anxiety rating at baseline
1 = Not at all
2 = Sightly
3 = Somewhat
4 = Very
5 = Extremely

Low condition: MPSS unable to concentrate rating at baseline
1 = Not at all
2 = Slightly
3 = SOmewhat
4 = Very
5 = Extremely

Low condition: MPSS drowy rating at 10 mins
1 = Not at all
2 = Slightly
3 = Somewhat
4 = Very
5 = Extremely]

Low condition: MPSS restlessness rating at 10 mins
1 = Not at all
2 = Slightly
3 = Somewhat
4 = very
5 = Extremely

Low condition: MPSS depression rating at 30 mins
1 = Not at all
2 = Slightly
3 = Somwhate
4 = Very
5 = Extremely

Low condition: MPSS anxiety rating at 30 mins
1 = Not at all
2 = Slightly]
3 = Somewhat
4 = Very
5 = Extremely

Low condition: MPSS hungry rating at 30 mins
1 = Not at all
2 = SLightly
3 = Somewhat
4 = Very
5 = Extremely

Low condition: MPSS drowy rating at 60 mins
1 = Not at al
2 = Slightly
3 = Somewhat]
4 = Very
5 = Extremely

Low condition: MPSS restlessness rating at 60 mins
1 = Not at all
2 = Slightly]
3 = Somewhat
4 = VERY
5 = Extremely

What strengths do you use
.00 = 0mg/ml
1.00 = 4mg/ml
2.00 = 6mg/ml
3.00 = 8mg/ml
4.00 = 10mg/ml
5.00 = 11mg/ml
6.00 = 15mg/ml
7.00 = 16mg/ml
8.00 = 18mg/ml
9.00 = 24mg/ml
10.00 = 36mg/ml
11.00 = Higher than 36mg/ml
12.00 = Not know