Table 1 Prevalence estimates of different definitions of back pain (N = 34,902)
| Â | n | (%) |
|---|---|---|
LBP ever | 20,053 | (57) |
LBP year | 15,093 | (43) * |
   LBP < 8 days | 3,804 | (10) |
   LBP 8-30 days | 6,168 | (18) |
   LBP > 30 days | 4,207 | (12) |
Radiating pain into leg(s) | 7,651 | (22) |
MBP ever | 5,966 | (17) |
MBP year | 4,535 | (13) * |
   MBP < 8 days | 1,161 | (3) |
   MBP 8-30 days | 1,633 | (5) |
   MBP > 30 days | 1,338 | (4) |
Pain radiating into chest | 1,846 | (5) |
NP ever | 14,059 | (40) |
NP year | 11,316 | (30) * |
   NP < 8 days | 2,523 | (7) |
   NP 8-30 days | 4,345 | (12) |
   NP > 30 days | 3,641 | (10) |
Pain radiating into arm(s) | 5,583 | (16) |