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Epidemiology Surveys
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Variable Label: Age of 1st out of blue attack


PD21b1

How old were you [(when you had the attack/the first time you had an attack)] for no obvious reason?

IF R REPORTS 'ALL MY LIFE' OR 'AS LONG AS I CAN REMEMBER', CODE: DON'T KNOW

A discrepancy exists between the question text in the surveys. You may wish to compare question text to determine how it affects the variable results.

View Universe

  • Valid N: 440
  • Refused: 50
  • Don't Know: 0
  • Missing (Other): 0
  • Missing (System): 5592
MeanStd DevMedianMinMax
23.4313.8319.0000.00070.000
  • Valid Range: 0 - 70
  • Total Cases: 6082

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