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Support #2225
openSF-12 missingness wave 2
Status:
Feedback
Priority:
Normal
Category:
Data documentation
Start date:
03/14/2025
% Done:
50%
Description
Hi,
I noticed there is quite a substantial amount of missingness (-9) on the derived SF12 physical and mental component summaries (sf12pcs_dv and sf12mcs_dv). This is 7.72% vs <1% in other waves.
Looking at the single items, this seems to be due to a substantially higher number of respondents coded as don't know (-1). These are in the hundreds and thousands at wave 2. For example, 2,063 are coded don't know (-1) on b_scsf3b.
Could you shed some light on why this is?
Many thanks and best wishes,
Verena
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