Notably, half of these studies investigating performance-based measures and measures of physical activity in natural environment had a moderate to low risk of bias, highlighting an increasing trend towards high quality research investigating these physical measures in LBP.
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Physical measures of physical functioning as prognostic factors to predict outcomes in low back pain: A systematic review and narrative synthesis.
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The sentences
The interpretation would be quite different if the estimates went in the opposite direction compared to a situation where they went in the same direction but in one study it did not quite reach statistical significance.