Additional file 1: Table S1. of Exposure to sub-chronic and long-term particulate air pollution and heart rate variability in an elderly cohort: the Normative Aging Study

Spearman correlation coefficients between selected exposure measurement intervals for BC and PM2.5a. BC: black carbon; PM2.5: particulate matter <2.5 μm in aerodynamic diameter a. Normative Aging Study (2000–2011). (DOC 39 kb)