Table 2 Descriptive information on MPI-S subgroups
| Â | MPI-S subgroups | Â | Â | ||
|---|---|---|---|---|---|
| Â | ID | DYS | AC | Â | Â |
| Â | n = 40 | n = 21 | n = 65 | ?2values | p -value |
Back pain the past year, n (%) | Â | Â | Â | 2.68 | 0.262 |
   No | 2 (5.0) | 3 (14.3) | 3 (4.6) |  |  |
   Yes, once or several times | 38 (95.0) | 18 (85.7) | 62 (95.4) |  |  |
Neck pain the past year, n (%) | Â | Â | Â | 6.75 | 0.034* |
   No | 9 (22.5) | 2 (9.5) | 24 (36.9) |  |  |
   Yes, once or several times | 31 (77.5) | 19 (90.5) | 41 (63.1) |  |  |
Mixed pain site the past year, n (%) | Â | Â | Â | 3.37 | 0.186 |
   No | 11 (27.5) | 5 (23.8) | 27 (41.5) |  |  |
   Yes, once or several times | 29 (72.5) | 16 (76.2) | 38 (58.5) |  |  |
Sickness absence due to neck/back pain, n (%) | Â | Â | Â | 4.55 | 0.103 |
   No | - | 2 (9.5) | 7 (10.8) |  |  |
   Yes, once or several times | 40 (100) | 19 (90.5) | 58 (89.2) |  |  |