Does body mass index or waist-hip ratio correlate with arterial stiffness based on brachial-ankle pulse wave velocity in Chinese rural adults with hypertension?

Table 2 Relationship between BMI levels and the prevalence of increased arterial stiffness in different models

Variables	Event, n (%)	Crude Model		Model I		Model II
Variables	Event, n (%)	OR (95%CI)	P-value	OR (95%CI)	P-value	OR (95%CI)	P-value
BMI (kg/m^²)
Per SD increase	2222 (44.01%)	0.77 (0.73, 0.82)	< 0.001	0.80 (0.74, 0.88)	< 0.001	0.74 (0.67, 0.81)	< 0.001
BMI category (kg/m^²)
Control (< 25)	1653 (46.95%)	Ref		Ref		Ref
Overweight (≥ 25, < 30)	514 (37.88%)	0.69 (0.61, 0.78)	< 0.001	0.80 (0.67, 0.95)	< 0.001	0.73 (0.61, 0.87)	< 0.001
General obesity (≥ 30)	55 (32.16%)	0.54 (0.39, 0.74)	< 0.001	0.56 (0.37, 0.84)	0.005	0.51 (0.34, 0.78)	0.002
P-value for trend		< 0.001		< 0.001		< 0.001
BMI tertiles (kg/m^²)
T1 [13.83, 21.68]	877 (52.11%)	Ref		Ref		Ref
T2 [21.68, 24.69]	715 (42.48%)	0.68 (0.59, 0.78)	< 0.001	0.81 (0.67, 0.96)	0.018	0.71 (0.59, 0.86)	< 0.001
T3 [24.69, 46.43]	630 (37.43%)	0.55 (0.48, 0.63)	< 0.001	0.67 (0.54, 0.82)	< 0.001	0.56 (0.45, 0.69)	< 0.001
P-value for trend		< 0.001		< 0.001		< 0.001

BMI, body mass index; Ref, reference; OR, odds ratio; CI, confidence interval; SD, standard deviation
Model I adjusted for age, sex, SBP, DBP, HR and WHR
Model II adjusted for age, sex, SBP, DBP, HR, WHR, smoking status, TG, LDL-C, eGFR, DM, CHD, history of stroke and antihypertensive medications

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