Response options: Never or almost never, About once or twice a year, About once or twice a month, About once or twice a week, Every day or almost every day, Valid Skip, Not Applicable, Invalid, No Response
Response options: Less than 1 hour a week, 1-3 hours a week, 4-6 hours a week, More than 6 hours a week, Valid Skip, Not Applicable, Invalid, No Response
Response options: SG: Missing;DE: Inapplicable;RU: Inappropriate response{Inap, Not asked, Not applicable, No answer, Don´t know, Mentioned, Not mentioned