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Net import versus O:E incident listings, with pre-Share 35 data in panel A and post-Share 35 data in panel B. Before Share 35, the regression equation was net import = –0.537 + 0.544 × OE incident listings (P < 0.001 for the intercept and slope) with an adjusted R2 value of 0.4474. After Share 35, the regression equation was net import = –0.445 + 0.437 × OE incident listings (P < 0.001 for the intercept and slope) with an adjusted R2 value of 0.4465.
