Queries

Choices for answer

Please mark your grade.

Elementary school (grade 5, 6), Junior high school (grade 1, 2, 3), High school (grade 1, 2, 3)

Please mark your gender.

Gender (male, female)

Please describe your height and weight.

Height (cm), Weight (kg)

Please mark your bed time before school days.

1. < 8 PM, 2. 8 PM - 9 PM, 3. 9 PM - 10 PM, 4. 10 PM - 11 PM, 5. 11 PM - 12 AM,

6. 12 AM - 1 AM, 7. 1 AM - 2 AM, 8. 2 AM - 3 AM or 9. > 3 AM

Please mark your bed time before non-school days.

1. < 8 PM, 2. 8 PM - 9 PM, 3. 9 PM - 10 PM, 4. 10 PM - 11 PM, 5. 11 PM - 12 AM,

6. 12 AM - 1 AM, 7. 1 AM - 2 AM, 8. 2 AM - 3 AM or 9. > 3 AM

Please mark your wake time on school days.

1. < 5 AM, 2. 5 AM - 6 AM, 3. 6 AM - 7 AM, 4. 7 AM - 8 AM, 5. 8 AM - 9 AM,

6. 9 AM - 10 AM, 7. 10 AM - 11 AM, 8. 11 AM - 12 PM or 9. > 12 PM

Please mark you wake time on non-school days.

1. < 5 AM, 2. 5 AM - 6 AM, 3. 6 AM - 7 AM, 4. 7 AM - 8 AM, 5. 8 AM - 9 AM,

6. 9 AM - 10 AM, 7. 10 AM - 11 AM, 8. 11 AM - 12 PM or 9. > 12 PM

Please mark the frequency you feel sleepy during class.

1. never, 2. sometimes, 3. often or 4. always

Please mark your frequency of eating breakfast.

1. always, 2. often, 3. sometimes or 4. never

Please mark your frequency of defecation.

1. every day, 2. every other day, 3. once every two to three days, 4. twice a week or less

Please mark the time you usually eat dinner.

1. around 6 PM, 2. around 7 PM, 3. around 8 PM, 4. around 9 PM, 5. around 10 PM,

6. around 11 PM, 7, later than 11 PM or 8. not determined

Do you participate in any kinds of after-school activity?

1. Yes, 2. No

If yes, please mark your frequency of participating in after-school activity.

1. once a week, 2. twice a week, 3. three times a week, 4. four times a week,

5. five times a week, 6. six times a week or 7. every day.

If yes, please mark the average duration of a single after-school activity.

1. 1 hour, 2. 2 hours, 3. 3 hours, 4. 4 hours or 5. 5 hours or more.

How many days a week do you perform habitual exercise except for school lessons?

0. none, 1. one day per week, 2. two days per week, 3. three days per week, 4. four days per week, 5. five days per week, 6. six days per week or 7. seven days per week

How long do you use various media devices (television, video, video game, digital versatile disc, computer, tablet, mobile [cell] phone, smart phone) in a day? Please answer separately on school days and non-school days.

On a school day.

1. < 2 hours, 2. 2 - 4 hours, 3. 4 - 6 hours, 4. 6 - 8 hours or 5. 8 hours or more.

On a non-school day.

1. < 2 hours, 2. 2 - 4 hours, 3. 4 - 6 hours, 4. 6 - 8 hours or 5. 8 hours or more.

Please mark the best choice for your overall academic performance.

1. very good, 2. good, 3. not good or 4. poor.