Table 1.
Characteristics of participating adolescents
| Pseudonym | Age | Sex | Duration of LBP | LBP intensity* | Pain onset | Family history of LBP |
||
|---|---|---|---|---|---|---|---|---|
| Avg | Worst | Current | ||||||
| Kathrine | 18 | Female | 1.5 years | 6 | 8 | 4 | Insidious | Yes |
| Sarah | 17 | Female | 3 years | 6 | 6 | 4 | Insidious | No |
| Emma | 18 | Female | 5 years | 6 | 9 | 4 | Traumatic | Yes |
| Hellen | 16 | Female | 2–3 years | 7 | 8 | 4 | Insidious | Yes |
| Amanda | 18 | Female | 2.5 years | 5 | 8 | 0 | Insidious | No |
| Beatrice | 16 | Female | 3 years | 0.5 | 3 | 0 | Insidious | Yes |
| Diane | 16 | Female | 2.5 years | 6 | 7 | 4 | Insidious | No |
| Tommy | 16 | Male | 10 months | 3 | 7 | 2 | Insidious | No |
| Oliver | 16 | Male | 9 months | 0 | 2 | 0 | Insidious | Yes |
| Ingrid | 15 | Female | 2 years | 7 | 9 | 4 | Traumatic | No |
* LBP intensity was measured on a 11-point numeric pain rating scale (0 = no pain & 10 = worst imaginable pain). LBP intensity was assessed as average LBP during last week, worst LBP during last week and current LBP