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. 2018 Feb 14;3(4):288–297. doi: 10.1001/jamacardio.2017.5365

Figure 2. Restricted Cubic Spline Plots for All-Cause Mortality by Systolic Blood Pressure.

Figure 2.

Hazard ratios and 95% confidence intervals for all-cause mortality by discharge systolic blood pressure level in 3915 patients with heart failure with preserved ejection fraction of 50% or greater according to restricted cubic spline regression models using 4 knots at blood pressures of 110 mm Hg, 120 mm Hg (reference), 140 mm Hg, and 150 mm Hg. Solid black lines indicate hazard ratios, and shaded areas indicate 95% CI. Plots on the left panel (A) are based on 3906 prematch patients (9 prematch patients had systolic blood pressure levels >200 mm Hg and were excluded), adjusting for propensity scores, and those on the right panel (B) are based on 1802 matched patients (none had systolic blood pressure levels >200 mm Hg) balanced on 58 baseline characteristics. Spline curves were truncated at a systolic blood pressure level of 200 mm Hg.