Response options: Several times a day, Once a day, Several times a week, Several times a month, Once a month, Less often, Never, Not applicable, Refusal, Don't know, No answer
Response options: Several times a day, Once a day, Several times a week, Several times a month, Once a month, Less often, Never, Not applicable, Refusal, Don't know, No answer
Response options: Several times a day, Once a day, Several times a week, Several times a month, Once a month, Less often, Never, Not applicable, Refusal, Don't know, No answer
Response options: Several times a day, Once a day, Several times a week, Several times a month, Once a month, Less often, Never, Not applicable, Refusal, Don't know, No answer