Table A1.

Survey Questions and Variables Created.

Survey Question	Choice Options	Variable Created
During the past 7 days, how many times did you eat fruits?	(a)I did not eat fruits during the past 7 days. (b)1 to 3 times during the past 7 days (c)4 to 6 times during the past 7 days (d)1 time per day (e)2 times per day (f)3 times per day (g)4+ times per day	Fruit_2 = 1 if the respondent eat fruits at least 2 times a per day in the past 7 days.
During the past 7 days, how many times did you eat vegetables?	(a)I did not eat fruits during the past 7 days. (b)1 to 3 times during the past 7 days (c)4 to 6 times during the past 7 days (d)1 time per day (e)2 times per day (f)3 times per day (g)4+ times per day	Veg_3 = 1 if the respondent eat vegetables at least 3 times per day in the past 7 days.
During the past 7 days, how many times did you drink a can, bottle, or glass or soda or pop, such as Coke, Pepsi, or Sprite? (Do not include diet soda or diet pop.)	(h)I did not drink soda or pop during the past 7 days. (i)1 to 3 times during the past 7 days (j)4 to 6 times during the past 7 days (k)1 time per day (l)2 times per day (m)3 times per day (n)4+ times per day	Soda = 1 if the respondent drink at least one soda or pop per day in the past 7 days.
During the past 7 days, on how many days were you physically active for a total of at least 60 min per day? (Add up all the time you spent in any kind of physical activity that increased your heart rate and made your breather hard some of the time.)	Choice options ranging from zero to 7 days.	Active_5Days = 1 if the respondent reported 5 days he/she were physically active.
On how many days of the past 7 days did you exercise or participate in physical activity for at least 30 min that do not made you sweat and breathe hard?	Choice option ranging from zero to 7 days.	Moderate_Exer = 1 if the respondent reported at least three days for such vigorous activity.
On how many days of the past 7 days did you exercise or participate in physical activity for at least 20 minutes that made your sweat and breathe hard, such as basketball, soccer, running, swimming laps, fast bicycling, fast dancing, or similar aerobic activities?	Choice option ranging from zero to 7 days.	Vigorous_Exer = 1 if the respondent reported at least three days for such vigorous activity.
How many days per week do you usually go to physical education (PE)?	Choice options ranging from zero to 5 days.	PE_class = 1 if the respondent had at least one day attending PE.
During the past 12 months, on how many sports teams did you play? (Include any teams run by your school or community groups.)	Choice options : zero team, 1 team, 2 teams, and 3+ teams	Sport_Team = 1 if the respondent played at least one team.
On an average school day, how many hours do you watch TV?	(a)I do not watch TV on average school day. (b)1 hour per day. (c)2 hours per day (d)3 hours per day (e)4 hours per day (f)5+ hours per day	TV_time = 1 if the respondent watched TV for at least three hours on an average school day.
On an average school day, how many hours do you play video or computer games or use a computer for something that is not school work.	(a)I do not play video or computer games or use a computer for something that is not school work. (b)1 hour per day. (c)2 hours per day (d)3 hours per day (e)4 hours per day (f)5+ hours per day	Video_time = 1 if the respondent paly video or computer games or use a computer for something that is not school work for at least three hours per day.
Which of the following are you trying to do about your weight?	(a)Lose weight (b)Gain weight (c)Stay the same weight (d)I am not trying to do anything about my weight.	LoseWeight = 1 if the respondent chooses option b).
During the past 30 days, did you diet to lose weight or to keep from gaining weight?	(e)Yes (f)No	LoseWeight_Diet = 1 if the respondent chose option a)
During the past 30 days, did you exercise to lose weight or to keep from gaining weight?	(g)Yes (h)No	LoseWeight_Exer = 1 if the respondent chose option a)
During the past 30 days, did you go without eating for 24 hours or more (also called fasting) to lose weight or to keep from gaining weight?	(i)Yes (j)No	LoseWeight_Fasting = 1 if the respondent chose option a)
During the past 30 days, did you take any diet pills, powder, or liquids without a doctor’s advice to lose weight or to keep from gaining weight?	(k)Yes (l)No	LoseWeight_Med = 1 if the respondent chose option a)