Response options: Daily, Less than daily, but at least once a week, Less than once a week, but at least once in the past month, Not at all, Valid skip, Don't know, Refusal, Not stated
Response options: Every day or almost every day, A few times a week, About once a week, About one to three times a month, Less than once a month, Never, DK/NA
Response options: Daily or almost daily, 4 to 5 times a week, 2 to 3 times a week, Once a week, 2 to 3 times a month, Once a month, Less than once a month, Never, Valid skip, Don't know, Refusal, Not stated