Effectiveness of Strengthening Exercises for the Elderly with Low Back Pain to Improve Symptoms and Functions: A Systematic Review

Table 6

Appraisal of risk of bias, according to Cochrane Effective Practice and Organization of Care risk of bias tool.

Criterion/articles	Random sequence generation	Allocation concealment	Similar baseline outcome	Similar baseline characteristics	Incomplete outcome data	Blinding	Contamination	Selective outcome reporting	Other bias
Vincent et al., 2014 [20]	Unclear	Low	Low	Low	Low	Low	Low	Unclear	Unclear
Hicks et al., 2012 [31]	Unclear	Unclear	Low	Low	High	High	Unclear	Low	Unclear
Vincent et al., 2014 [28]	Low	Low	Low	Low	Low	Low	Low	Low	Unclear