====== Assessment 1A ======

Assessment 1A or "Baseline Assessment" is the first [[general assessments|general assessment]] of [[start|Lifelines]].\\
Assessment 1A was performed between **2007** and **2013**, with the majority of [[cohort|participants]] being assessed between 2010 and 2013.\\
Assessment 1A was followed by follow-up questionnaires [[1B]] (after, on average, 17 months) and [[1C]] (after, on average, 30 months), and by second assessment [[2A]] (after, on average, 46 months). 

For adult and elderly participants, assessment 1A consisted of the following elements:
  * [[1A Visit 1]] (physical measurements, MINI, MMSE on [[location]])
  * [[1A Visit 2]] (blood and urine samples on [[location]])
  * [[children]] followed an age-dependent program

For adult and elderly participants, this assessment also consisted of the following elements:

**[[1A Questionnaire 1]]** (click here for detailed list of subsections)
  * [[demographics]] 
  * [[diseases & symptoms]]
  * [[elderly]]
  * [[family health]]
  * [[lifestyle & environment]]
  * [[medical treatment]]
  * [[mental health]]
  * [[reproduction & development]]
  * [[wellbeing & subjective health]] 

**[[1A Questionnaire 2]]** (click here for detailed list of subsections)
  * [[demographics]] 
  * [[diseases & symptoms]]
  * [[elderly]]
  * [[lifestyle & environment]]
  * [[mental health]]
  * [[nutrition]]
  * [[reproduction & development]]
  * [[wellbeing & subjective health]]

A subset of adult participants received a so-called [[Proxy]] interview instead of the questionnaires.\\
[[Children]] received an age-dependent set of questionnaires during assessment 1A.

Participants' exposure to [[environmental exposure (linkage)|noise]] and [[environmental exposure (linkage)|air pollution]] at baseline were determined via linkage with environmental resources based on postal code 6 of their home address at the time.