Table 3.

Fitted trajectories of endo-PAT and BaPWV with baseline somatic growth, by fractional polynomial regression analysis

Variables	Powers	Coef.	SE.	t	P > |t|	R2	Prob > F
RHI						0.14	< 0.001
Age	−0.5	−1.310	0.378	−3.47	0.001
Height		0.002	0.003	0.67	0.504
Gender		0.076	0.050	1.53	0.127
Baseline PWA (occ)		0.0002	0.0001	1.28	0.202
F-RHI						0.39	< 0.001
Age	−0.5	− 0.948	0.216	−4.39	< 0.001
Height		0.003	0.002	1.62	0.107
Gender		0.040	0.029	1.38	0.167
Baseline PWA (occ)		−0.0008	0.0001	−12.09	< 0.001
Peak response						0.24	< 0.001
Age	− 0.5	−0.870	0.336	−2.59	0.010
Height		0.003	0.002	1.14	0.254
Gender		0.007	0.044	0.16	0.873
Baseline PWA (occ)		−0.001	0.0001	−9.71	< 0.001
AIx75						0.13	< 0.001
Age	−2	−1.568	1.698	−0.92	0.356
Height		−0.212	0.549	−3.86	< 0.001
Gender		4.317	0.922	4.68	< 0.001
Baseline PWA (occ)		0.0009	0.002	0.40	0.688
BaPWV						0.19	< 0.001
Age	0	− 2104.2	324.3	−6.49	< 0.001
Age_2	0.5	4266.6	601.4	7.09	< 0.001
Height		−0.746	0.676	−1.10	0.270
Gender		−30.92	10.66	−2.90	0.001
Baseline PWA (occ)		−0.682	0.025	−2.66	0.008

Abbreviations: PWA pulse-wave amplitude, occ occlusion arm, RHI reactive hyperemia index, FRHI Framingham-reactive hyperemia index, AIx75 Augmentation Index normalized to Heart Rate 75 bpm, BaPWV Brachial-ankle pulse wave velocity