====== Mobile phone use (MOB) ======

Mobile phone use ([[sections|section]]: [[lifestyle & environment]]) was assessed in  adult [[start|Lifelines]] participants using a questionnaire (MOB) that originated from the [[https://www.ukbiobank.ac.uk/|UK Biobank]] ((http://biobank.ctsu.ox.ac.uk/crystal/docs/TouchscreenQuestionsMainFinal.pdf)). The MOB consists of 5 questions that were translated from English to Dutch.
Note, similar questions have been asked to [[children|underage]] participants as well ([[Screen use (<18)]]).
===== Variables ======

| **Questions English**                                                                                                 | **Questions Dutch**                                                                                                                        | **Code**                | **Variable**  | **Assessment**  | **Age**  |
| since (approximately) how many years do you use a mobile phone to make or receive calls at least once a week?         | sinds (ongeveer) hoeveel jaar maakt u minimaal één keer per week gebruik van een mobiele telefoon om te bellen of gebeld te worden?        | mob_startyear_adu_q_01  | mob1          | [[1B]]          | 18+      |
| in the past 3 months, on average how much time per week did you spend making or receiving calls with a mobile phone?  | hoeveel tijd besteedde u gemiddeld per week aan het bellen of gebeld worden met een mobiele telefoon in de afgelopen 3 maanden?            | mob_frequency_adu_q_02  | mob2          | [[1B]]          | 18+      |
| in the past 3 months, how often did you use a hands-free kit when making or receiving calls with your mobile phone?   | hoe vaak hebt u gebruik gemaakt van een hands-free set bij het bellen of gebeld worden met uw mobiele telefoon in de afgelopen 3 maanden?  | mob_handsfree_adu_q_03  | mob3          | [[1B]]          | 18+      |
| are there any differences between your current use of your mobile phone compared to two years ago?                    | zijn er verschillen tussen uw huidige gebruik van uw mobiele telefoon vergeleken met twee jaar geleden?                                    | mob_change_adu_q_04     | mob4          | [[1B]]          | 18+      |
| on which side of your head do you mostly use your mobile phone?                                                       | aan welke kant van uw hoofd gebruikt u uw mobiele telefoon meestal?                                                                        | mob_headside_adu_q_05   | mob5          | [[1B]]          | 18+      |