Table 1 Comparisons between 1) those who dropped out before week 12, 2) participants who did not answer every week but fulfilled the criteria for being in the study population, and 3) those responding every week.
| Â | 1) Dropped out before week 12 n = 32 | The study population 2) + 3) n = 78 | 2) Study population who did not answer all weeks n = 34 | 3) Study population responding every week n = 44 |
|---|---|---|---|---|
Gender (%): | Â | Â | Â | Â |
Male | 69 | 50 | 35 | 61 |
Female | 31 | 50 | 65 | 39 |
Age | Â | Â | Â | Â |
(mean [SD]) | 42.3 [11.5] | 42.5 [9.9] | 43.0 [9.4] | 42.1 [10.3] |
Duration of episode (%): | Â | Â | Â | Â |
1 - 7 days | 22 | 45 | 35 | 52 |
8 - 12 weeks | 44 | 33 | 38 | 30 |
> 12 weeks | 34 | 19 | 21 | 18 |
missing | 0 | 3 | 6 | 0 |
Localisation (%): | Â | Â | Â | Â |
LBP | 44 | 55 | 47 | 61 |
LBP + leg pain | 53 | 41 | 44 | 39 |
missing | 3 | 4 | 9 | 0 |
No. of LBP days the 1st week | n = 22 | n = 74 | n = 30 | n = 44 |
(mean [SD]) | 4.7 [2.7] | 4.9 [2.2] | 4.6 [2.4] | 5.1 [2.0] |
Present pain intensity at the 1st follow-up (%): | n = 24 | n = 75 | n = 31 | n = 44 |
no pain | 29 | 23 | 29 | 18 |
some | 58 | 61 | 55 | 66 |
severe | 13 | 16 | 16 | 16 |