Editing DevCon (section)

==AddHealth==

'''Questions'''

Wave 1:

*<u>Question H1TO15</u>: During the past 12 months, on how many days did you drink alcohol?
** 1 = Every day or almost every day
** 2 = 3-5 days a week
** 3 = 1-2 days a week
** 4 = 2-3 days a month
** 5 = Once a month or less (3-12 times in the past 12 months)
** 6 = 1 or 2 days in the past 12 months
** 7 = Never
** Options for refused, legitimate skip, don't know
** Only asked if ever had a drink more than 2 or 3 times (not just a sip or taste of someone else's drink)

<u>Question H1TO16</u>: Think of all the times you have had a drink during the past 12 months. How many drinks did you usually have each time?
** Answers range from 1-90 drinks
** Not asked if H1TO15=7, refused, don't know


Wave 2: 

*<u>Question H2TO19</u>: During the past 12 months, on how many days did you drink alcohol?
** 1 = Every day or almost every day
** 2 = 3-5 days a week
** 3 = 1-2 days a week
** 4 = 2-3 days a month
** 5 = Once a month or less (3-12 times in the past 12 months)
** 6 = 1 or 2 days in the past 12 months
** 7 = Never
** Options for refused, legitimate skip, don't know
** Only asked if ever had a drink more than 2 or 3 times since month of last interview (not just a sip or taste of someone else's drink)

*<u>Question H2TO20</u>: Think of all the times you have had a drink during the past 12 months. How many drinks did you usually have each time?
** Answers range from 1-95 drinks
** Not asked if H2TO19 = 7, refused, don't know

Wave 3: 

*<u>Question H3TO38:</u> During the past 12 months, on how many days did you drink alcohol? ''Note: This will need to be recoded to match W1/2''
** 0 = None
** 1 = 1 or 2 days in the past 12 months
** 2 = Once a month or less (3-12 times in the past 12 months)
** 3 = 2-3 days a month
** 4 = 1-2 days a week
** 5 = 3-5 days a week
** 6 = Every day or almost every day
** Options for refused, don't know, legitimate skip, not applicable, missing
** Only asked if, since June 1995, subject ever had a drink of beer, wine, or liquor more than 2 or 3 times (does not include sips or tastes from someone else's drink)

*<u>Question H3TO39</u>: Think of all the times you have had a drink during the past 12 months. How many drinks did you usually have each time?
** Answers range from 1-18 drinks; options for refused, legitimate skip, don't know, not applicable, missing
** Not asked if H3TO38 = 0

Wave 4: 

*<u>Question H4TO35</u>: During the past 12 months, on how many days did you drink alcohol? ''Note: This will need to be recoded to match W1/2''
** 0 = None
** 1 = 1 or 2 days in the past 12 months
** 2 = Once a month or less (3-12 times in the past 12 months)
** 3 = 2-3 days a month
** 4 = 1-2 days a week
** 5 = 3-5 days a week
** 6 = Every day or almost every day
** Options for refused, don't know, legitimate skip, not applicable, missing
** Only asked if ever had a drink more than 2 or 3 times (not just a sip or taste of someone else's drink)

*<u>Question H4TO36</u>: Think of all the times you have had a drink during the past 12 months. How many drinks did you usually have each time?
** Answers range from 1-18; options for refuse, legitimate skip, don't know
** Not asked if H4TO35 = 0

'''Recoding and Transforming'''

Questions H1TO15 and H2TO19 were recoded from ordinal to numeric using the following conversions:
** 1 -> 365
** 2 -> 208
** 3 -> 78
** 4 -> 30
** 5 -> 7.5 
** 6 -> 1.5 
** 7 -> 0
** Others -> NA

Questions H3TO38 and H4TO35 were recoded from ordinal to numeric using the following conversions:
** 0 -> 0
** 6 -> 365
** 5 -> 208
** 4 -> 78
** 3 -> 30
** 2 -> 7.5 
** 1 -> 1.5
** Others -> NA

'''Combining variables:'''

The transformed drinking days per year variables were multiplied by the drinks per day variables, then divided by 52 to get an average drinks per week over the last year:
** DPW1 = (Recoded H1TO15 * H1TO16)/52
** DPW2 = (Recoded H2TO19 * H2TO20)/52
** DPW3 = (Recoded H3TO38 * H3TO39)/52
** DPW4 = (Recoded H4TO35 * H4TO36)/52

After data cleaning, the distributions of the DPW variables looked like this:

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


The change over time to average DPW (added jitter) looked like this:

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