Q1: How frequently do you use mobile phone per week? | ||||
1) every day | 2) 4 - 5 times | 3) 2 - 3 times | 4) 0 - 1 time | |
Q2: What time do you mainly use mobile phones in weekdays? (multiple answers available) | ||||
1) 6:00 ~ 9:00 | 2) 9:00 ~ 12:00 | 3) 12:00 ~ 15:00 | 4) 15:00 ~ 18:00 | |
5) 18:00 ~ 21:00 | 6) 21:00 ~ 24:00 | 7) 24:00 ~ 3:00 | 8) 3:00 ~ 6:00 | |
Q3-1: On the usage of mobile phone between bedtime to wake-up time, where do you put your mobile phone when you go to bed? | ||||
1) in the bed (e.g. near to head) | 2) far from the bed but inside bedroom | |||
3) other rooms than bed room | ||||
Q3-2: When you are going to fall in sleep in the bed and phone from mobile phone rings (including mail, LINE and so on), how do you respond to it? | ||||
1) Respond to it soon, | 2) Check it but no response, | |||
3) No attention but sleep | ||||
Q4: How long per one usage do you use mobile phone in weekdays? | ||||
1) within | 2) 10 ~ 30 min | 3) 30 min ~ 1 h | 4) >1 h | |
5) 1 - 2 hours | 6) 3 hours or more |