گزینههای پاسخ: Missing; RU,DE: Inappropriate response{Inappropriate}, Not asked in survey, Not applicable, No answer, Don´t know, Have done, Might do, Would never do
گزینههای پاسخ: Become Much Better, Become Somewhat Better, Stay About the Same, Become Somewhat Worse, Become Much Worse, Not Asked, Refused (vol.), Don't Know (vol.)
گزینههای پاسخ: DE,MX,SE:Inapplicable ; RU:Inappropriate response; Missing{I, Not asked in survey, Not applicable, No answer, Don´t know, Have done, Might do, Would never do
