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89,012 items of data are available, covering 89,012 participants.
Some values have special meanings defined by Data-Coding 513
- There are 77 distinct values.
- Mean = 37.2116
- Std.dev = 15.0261
- 783 items have value -818 (Prefer not to answer)
- 6942 items have value -121 (Do not know)
Question asked: "About how old were you the FIRST time you had a period of two weeks like this? (Whether or not you received any help for it.)"
Question was asked when Field 20446 was Yes or Field 20441 was Yes.
Coding 513 defines 2 special values:
- -121 represents "Do not know"
- -818 represents "Prefer not to answer"
2 Related Data-Fields
|20446||Ever had prolonged feelings of sadne ...||Field 20446 was a trigger for Current Field|
|20441||Ever had prolonged loss of interest ...||Field 20441 was a trigger for Current Field|