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. 2022 Oct 10;28(10):2045–2055. doi: 10.1038/s41591-022-01978-x

Fig. 2. Smoking and COPD.

Fig. 2

a, The log(RR) function. b, RR function. c, A modified funnel plot showing the residuals (relative to 0) on the x axis and the estimated s.d. that includes the reported s.d. and between-study heterogeneity on the y axis.