Editing DevCon (section)

==AddHealth==

'''Questions'''

Wave 1:

*<u>Question H1TO5</u>: During the past 30 days, on how many days did you smoke cigarettes? 
** Answers range from 0-30 days; options for refused, don't know, legitimate skip
** Asked of everyone who has ever tried cigarette smoking (even just 1 or 2 puffs), regardless of smoking regularity

*<u>Question H1TO7</u>: During the past 30 days, on the days you smoked, how many cigarettes did you smoke each day?
** Answers range from 0-95 cigarettes; options for refused, don't know, legitimate skip
** Not asked if to H1TO5 = 0

Wave 2:

*<u>Question H2TO5</u>: During the past 30 days, on how many days did you smoke cigarettes?
** Answers range from 0-30 days; options for refused, don't know, legitimate skip
** Asked of everyone who has ever tried cigarette smoking since the month of last interview (even just 1 or 2 puffs), regardless of smoking regularity

*<u>Question H2TO7</u>: During the past 30 days, on the days you smoked, how many cigarettes did you smoke each day?
** Answers range from 0-95 cigarettes; options for refused, don't know, legitimate skip
** Asked even if response to H2TO5=0

Wave 3: 

*<u>Question H3TO6</u>: Have you ever smoked at all in the past 30 days?
** 0 = no
** 1 = yes
** Options for refused, don't know, legitimate skip, missing
** Only asked of current, regular (smoked at least one cigarette a day for the last 30 days) smokers; not asked of current smokers who do not smoke daily.

*<u>Question H3TO7</u>: During the past 30 days, on how many did you smoke cigarettes?
** Answers range from 0-30 days; options for refused, don't know, legitimate skip, missing
** Only asked if answer to H3TO6 != 0
** Only asked of current, regular (smoked at least one cigarette a day for the last 30 days) smokers; not asked of current smokers who do not smoke daily.

*<u>Question H3TO10</u>: During the past 30 days, on the days you smoked, how many cigarettes did you smoke each day?
** Answers range from 1-100 cigarettes; options for refused, legitimate skip, don't know, not applicable, missing
** Only asked if answer to H3TO6 != 0
** Only asked of current, regular (smoked at least one cigarette a day for the last 30 days) smokers; not asked of current smokers who do not smoke daily.


Wave 4: 

*<u>Question H4TO5</u>: During the past 30 days, on how many days did you smoke cigarettes?
** Answers range from 0-30 days; options for refused, don't know

*<u>Question H4TO6</u>: During the past 30 days, on the days you smoked, how many cigarettes did you smoke each day?
** Answers range from 1-100 cigarettes; options for refuse, legitimate skip, don't know
** Not asked if H4TO5 = 0, refused, or don't know

'''Combining Variables'''
The smoking days per month variables were combined with the cigarettes per day variables, then divided by 30 to get a measure of average cigarettes per day over the last month:
** CPD1 = (H1TO5*H1TO7)/30
** CPD2 = (H2TO5*H2TO7)/30
** CPD3 = (H3TO07*H3TO10)/30
** CPD4 = (H4TO5*H4TO6)/30

The distribution of the CPD variables looked like this:

[[File:AddHealthCPD.jpg|frameless|border|Caption can go here]]


The change in CPD over time (added jitter) looks like this:

[[File:AddHealthCPDSpaghetti.jpg|frameless|border|Caption can go here]]