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Forest plot summary of logistic regression analysis for risk of acute lung injury/acute respiratory distress syndrome (ALI/ARDS) in the sepsis cohort. Higher vitamin D levels in winter were associated with a higher odds ratio (OR) for developing ALI/ARDS: OR 1.68 (95% CI 1.054 to 2.69), (P = 0.03). OR (black dots) and the corresponding CIs (black lines) for the risk of ALI/ARDS for each covariate are shown.
