WLS Codebooks

Note: Codebooks contain frequency data from the private data release. For some variables, these differ from the frequencies in the public release. Variables that differ between the public and private versions include "(not available on public release)" as part of the variable description, or a note indicating the difference between the public and private versions.

Depression

O1DEPR Depression Module

OVERVIEW:

The Depression Module was introduced in the 1993 collection wave as a part of
the primary telephone interview, including questions regarding alcohol
consumption as well. These variables were replicated in the 2004 and 2011
collection waves, with Depression having a separate module, no longer including
questions regarding alcohol. All previous waves only asked questions regarding
depression to a random 80% sub-sample. The ILIAD Depression Module generally
replicates the variables from previous waves, BUT is not restricted to the
previously used 80% sub-sample.  All participants had this module administred
where appropriate.
	
	
While the variables for the ILIAD Depression Module replicate those from the
earlier collection waves, the information differs slightly. When comparing
these data across time between any waves of WLS, please be mindful of the
language used in each survey to define the period of depresion being aksed
about (it's severity and timeframe). 


BRIEF VARIABLE DESCRIPTIONS

    Variable ranges reference dataset/codebook order and are not necessarily 
    alphabetical.
    _____________________________________________________________________

    
    o1u002re:             Depression since last interviewed
                            
    o1u003re,                
    o1u003rea-o1u003red:  Questions regarding possible cause of depression

    o1u004re-o1u012re:    Depression age, depression symptoms        
    
    o1u024re:             Count of depression symptoms

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