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Fig. 3 | Respiratory Research

Fig. 3

From: BMI is associated with FEV1 decline in chronic obstructive pulmonary disease: a meta-analysis of clinical trials

Fig. 3

Meta-regression of annualized rate of FEV1 decline by body mass index (BMI). Inverse variance weighted (IVW) model, with BMI as an ordinal variable from BMI-I (lowest) to BMI-IV (highest). Size of circles represents relative weighting of estimates. See main text from description of BMI categories. FEV1, forced expiratory volume in 1 s; p, significance of linear trend

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