List of included prospective cohort studies with quality scores with reference to predictive value of physical fitness for low back pain in children and adolescents
| Study | Fitness dimension | Selection of population | Description of outcome | Follow-up time | Confounder adjustment | Risk estimates | Total score |
| High-quality studies | |||||||
| Kujala et al55 | Musculoskeletal fitness | 1 | 1 | 1 | 0 | 0 | 3 |
| Barnekow-Bergkvist et al56 | Musculoskeletal and motor fitness | 1 | 1 | 1 | 0 | 1 | 4 |
| Burton et al57 | Musculoskeletal fitness | 1 | 1 | 1 | 0 | 1 | 4 |
| Mikkelsson et al60 | Musculoskeletal fitness and body composition | 1 | 1 | 1 | 1 | 1 | 5 |
| Hestbaek et al59 | Body composition | 1 | 1 | 1 | 1 | 1 | 5 |