Figure 4.

Odds Ratio (OR) for a high atherosclerotic burden (IMT_max in the upper quartile) according to quartiles of plaque-GSM and IM-GSM. The more echolucent the plaque (low GSM), the greater the IMT_max; the more echogenic the IM (high GSM), the greater the IMT_max. Odds Ratios (OR) of IMT_max are calculated after data adjustment for latitude, sex, age, educational level, pulse pressure, and pack-years_code; and the intersection of the 4th quartile of plaque-GSM and the 1st quartile of IM-GSM was used as a reference. Values of OR and corresponding 95% confidence intervals are given in Table S5.