====== 2A Child Questionnaire (4-12y) ======

Parents of [[children|young Lifelines participants]] (4-12 years old) participating in general assessment [[2A]] filled in a questionnaire for their children (n = ~6,200).\\
[[Cohort|Lifelines]] participants between 13-17 years old (n = ~2,600) filled in their own [[2A Youth Questionnaire]].\\ 
The 2A Child Questionnaire was followed by [[2A Visit 1]], on average within xx days (+/- yy days).\\
The 2A Child Questionnaire is procedurally equivalent to the combined child questionnaires in general assessment [[1A]].\\ 

N=xxx parents filled in a paper variant of the 2A Child Questionnaire, N=yyy parents filled in a digital variant of the 2A Child Questionnaire.

The 2A Child Questionnaire contained the following [[sections]] and subsections:

==== Demographics ====
  * [[Education]]
  * [[Family composition]]
  * [[Personal data]]

==== Diseases & symptoms ====
  * [[Acne]]
  * [[Allergies]]
  * [[Asthma & Allergies (ISAAC)]]
  * [[Cold/Flu]]
  * [[Digestive symptoms]]
  * [[Ear conditions]]
  * [[Eye Conditions (general)]]
  * [[Fatigue (general)]]
  * [[General health (PROMIS)|Fatigue (PROMIS)]]
  * [[Insomnia]]
  * [[Kidney & bladder diseases]]
  * [[Mental illnesses]]
  * [[Musculoskeletal symptoms]]
  * [[Neurological disorders]]
  * [[Respiratory problems (general)]]
  * [[Skin conditions]]

==== Lifestyle & Environment ====  
  * [[Electronic device use]]
  * [[Exposure to smoking]]
  * [[Hobbies & activities]]
  * [[Pets & livestock]]
  * [[Physical activity (sports)]]
  * [[Sleep (general)]]
  * [[Chronotype (MCTQ)]]

==== Medical Treatment ====  
  * [[Medication]]
  * [[Treatment (general)]]

==== Mental Health ==== 
  * [[Child behavior (CBCL)]]
  * [[Family functioning (FAD)]]
  * [[Learning difficulties]]
  * [[Social functioning (general)]]
  * [[General health (PROMIS|Social functioning (PROMIS)]]
  * [[Stress (general)]]

==== Physical State ====
  * [[Anthropometry (self-reported)]]

==== Reproduction & development ====
  * [[Physical development]]
  * [[Children's diet (general)]]

==== Wellbeing & Subjective Health ====
  * [[Subjective health (general)]]