Abstract:
Objective To explore the correlation between the life's essential 8 (LE8) score and the inter-arm systolic blood pressure difference (IASBPD).
Methods A cross-sectional study was conducted. Participants who underwent health check-ups at the Kailuan Group between 2010 and 2020 and had at least one peripheral arterial stiffness test were selected. After excluding the subjects with missing unilateral or bilateral blood pressure values and any missing LE8 data, a total of 47 671 subjects were included. According to the LE8 algorithm developed by the American Heart Association, and combined with the actual situation of Kailuan Study, the Kailuan Study version of LE8 was developed, including 4 cardiovascular health behaviors (nicotine exposure, physical exercise, dietary status, and sleeping health) and 4 cardiovascular health factors (body mass index, blood pressure, blood glucose, and blood lipid). The association between LE8 score and IASBPD was analyzed using generalized linear models. The impact of LE8 score on IASBPD was analyzed using logistic regression models. The dose-effect relationship between LE8 score and IASBPD was assessed by a restricted cubic spline regression model. Stratified analysis was conducted for patients of different ages and genders, as well as for patients with and without tumors, and with and without coronary heart disease.
Results IASBPD≥10 mmHg was detected in 5 411 subjects, with a detection rate of 11.35%. After adjusting for confounding factors, the results of the generalized linear regression model showed that for every ten-point increase in LE8 score, the IASBPD in the total population decreased by 0.31 mmHg, in males decreased by 0.27 mmHg, in females decreased by 0.30 mmHg, in the middle-aged and young group decreased by 0.27 mmHg, and in the elderly group decreased by 0.26 mmHg (P<0.01 for all). The results of multivariate logistic regression analysis showed that compared to the low cardiovascular health (CVH) group (LE8 score was 0–49), the risk of abnormal IASBPD was reduced by 24% (OR=0.76, 95%CI:0.71–0.81, P<0.01) in the medium CVH group (LE8 score was 50–79) and reduced by 65% (OR=0.35, 95%CI:0.29–0.43, P<0.01) in the high CVH group (LE8 score was 80–100). For every one standard deviation increase in LE8 score, the risk of abnormal IASBPD was reduced by 21% (OR=0.79, 95%CI: 0.76–0.81, P<0.01). The restricted cubic spline plot showed that LE8 score was negatively correlated with IASBPD in a nonlinear manner (Poverall<0.01, Pnon-linear<0.01). Stratified analysis showed that there was an interaction between LE8 score groups and gender and age (both P<0.01). Gender stratification showed that in the female population, the risk of abnormal IASBPD in the high CVH group reduced by 72% (OR=0.28, 95%CI: 0.20–0.38), and in the male population, the risk reduced by 43% (OR=0.57, 95%CI: 0.44–0.74). Age stratification showed that in the middle-aged and young group, the risk of abnormal IASBPD in the high CVH group reduced by 63% (OR=0.37, 95%CI: 0.30–0.46), and in the elderly group, the risk reduced by 53% (OR=0.47, 95%CI: 0.29–0.76).
Conclusion The LE8 score is negatively correlated with IASBPD, and this association is more pronounced in females and middle-aged and young adults.