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Table 2 Quality appraisal of included studies

From: Restriction in lateral bending range of motion, lumbar lordosis, and hamstring flexibility predicts the development of low back pain: a systematic review of prospective cohort studies

  Adams et al [29] Biering-Sorensen et al [30] Feldman et al [31] Fortin et al [40] Gibbons et al [32] Kanchanomai et al [33] Kountouris et al [34] Kujala et al [35] Luoto et al [36] Milgrom et al [37] Nissinen et al [39] Van Nieuwenhuyse et al [38]
1. Is the study relevant to the needs of the Project? yes yes yes yes yes yes yes yes yes yes yes yes
2. Does the paper address a clearly focused issue? yes yes yes yes yes yes yes yes yes yes yes yes
3. Is the choice of study method appropriate? yes yes yes yes yes yes yes yes yes yes yes yes
4. Is the population studied appropriate? yes yes yes yes yes yes yes yes yes yes yes yes
5. Is confounding and bias considered? can’t tell can’t tell yes yes can’t tell yes yes yes can’t tell can’t tell can’t tell can’t tell
6. Was follow up for long enough? yes yes yes yes yes yes yes yes yes can’t tell yes yes
7. Are tables/graphs adequately labelled and understandable? yes yes yes yes yes yes yes yes yes yes yes yes
8. Are you confident with the authors' choice and use of statistical methods, if employed? yes yes yes yes yes yes yes yes yes yes yes yes
9. What are the results of this piece of research? Are the authors' conclusions adequately supported by the information cited? yes yes yes yes yes yes yes yes yes yes yes yes
10. Can the results be applied to the local situation? can’t tell can’t tell can’t tell can’t tell can’t tell can’t tell can’t tell can’t tell can’t tell can’t tell Can’t tell can’t tell
11. Were all important outcomes/results considered? yes yes yes yes yes no yes no no yes yes yes
12. Is any cost information provided? no yes no no no yes yes yes yes no yes yes
13. Accept for further use as Type IV evidence? yes yes yes yes yes yes yes yes yes yes yes yes