Figure 2
From: A case-control study of physical activity patterns and risk of non-fatal myocardial infarction
Relationship between light indoor activity component score and risk of AMI fitted with natural cubic splines in a case control study, Costa Rica, 1994-2004. (The reference line (OR=1.0) goes through the median value of the first quintile; the solid line for ORs; the dashed lines for 95% confidence interval boundaries).