Figure 3.

Estimated HRs (solid line) and 95% CIs (dashed lines) for all-cause mortality associated with levels of total aerobic physical activity (MPA+VPA) estimated using cubic splines with three knots. CPH models allow for combinations of age, sex and race to have their own baseline hazard. CPH models control for income, education, marital status, smoking status, BMI, chronic conditions and survey year. HRs and 95% CIs are plotted on a natural log scale. BMI, body mass index; CPH, Cox proportional hazard; MPA, moderate physical activity; VPA, vigorous physical activity.