TABLE 3.

Associations of digital pulse propagation index with all-cause and cardiovascular mortality

		Intermediate DPPI (Q3)	High DPPI (Q4)		LogDPPI continuous
	Low DPPI (Q1 + Q2)	HR (95% CI)	HR (95% CI)	P (trend)	HR (95% CI) per SD	P	Harrell's C
All-cause mortality, n = 289
Model 1	1.0 (ref)	1.87 (1.57–2.24)	5.52 (4.13–7.38)	<0.001	1.67 (1.55–1.81)	<0.001	0.71
Model 2	1.0 (ref)	1.04 (0.75–1.7)	1.72 (1.24–2.39)	<0.001	1.19 (1.07–1.33)	0.002	0.82
Model 3	1.0 (ref)	1.10 (0.77–1.59)	1.63 (1.17–2.28)	0.002	1.14 (1.02–1.27)	0.025	0.83
Model 4	1.0 (ref)	1.09 (0.77–1.61)	1.65 (1.18–2.30)	0.002	1.14 (1.02–1.28)	0.024	0.84
Cardiovascular mortality, n = 74
Model 1	1.0 (ref)	1.85 (1.25–2.75)	8.31 (4.55–15.16)	<0.001	1.95 (1.72–2.22)	<0.001	0.75
Model 2	1.0 (ref)	1.11 (0.74–1.66)	2.59 (1.36–4.95)	0.001	1.49 (1.27–1.76)	<0.001	0.88
Model 3	1.0 (ref)	1.51 (0.67–3.37)	2.66 (1.37–5.16)	0.002	1.41 (1.19–1.68)	<0.001	0.91
Model 4	1.0 (ref)	1.57 (0.70–3.54)	2.60 (1.33–5.08)	0.004	1.45 (1.22–1.73)	<0.001	0.92

CI, confidence interval; DPPI, digital pulse propagation index; HR, hazard ratio.