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36,221 items of data are available, covering 36,221 participants.
Some values have special meanings defined by Data-Coding 584
- There are 80 distinct values.
- Mean = 3.55643
- Std.dev = 9.04688
- 1367 items above graph maximum of 16
- 930 items have value -818 (Prefer not to answer)
Question asked: On how many days in the last 3 months did your headaches interfere with your ability to work, study or enjoy life?
Only asked if Field 120053 was answered yes and Field 120054 was greater than zero
Coding 584 defines 1 special value:
- -818 represents "Prefer not to answer"
0 Related Data-FieldsThere are no related data-fields