Hand Card N2, read list if telephone interview
Card N2
0. Less than one month
1. 1 month, less than 3 months
2. 3 months, less than 6 months
3. 6 months, less than 12 months
4. 1 year, less than 5 years
5. 5 or more years
c. What was the longest period of time that you had back pain every day?
0[] Less than one month
1[] 1 month, less than 3 months
2[] 3 months, less than 6 months
3[] 6 months, less than 12 months
4[] 1 year, less than 5 years
5[] 5 or more years