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Interaction of ACE genotype and salt intake on hypertension among Chinese Kazakhs: results from a population-based cross-sectional study.

Abstract：

OBJECTIVES:To explore the effect of interaction between ACE genotype and salt intake on hypertension among Chinese Kazakhs, and to compare applications of interactions between logistic model and generalised partially linear tree-based regression (GPLTR) model. DESIGN:Population-based cross-sectional study. SETTING:Hong Dun, North Xinjiang, China. PARTICIPANTS:Non-consanguineous Chinese Kazakh participants (n=916, 342 men and 574 women) aged ≥30 years. MAIN OUTCOME MEASURES:Association between ACE genotype and hypertension, association between salt intake and hypertension, and interaction of ACE genotype and salt intake on hypertension in two models. RESULTS:Associations between salt intake and hypertension were different in ACE genotype of II and ID+DD. Under the logistic models, main and interaction effects were not observed for men, but effects were present in opposite directions for women (main effect of ACE: OR=0.20, p=0.003; interaction effect: OR=1.07, p=0.027). Under the GPLTR model, Bayesian information criterion trees included both salt intake and ACE genotype as split variables. Individuals with a salt intake ≥19.5 g/day and ID+DD genotypes had a 3.99-fold (p=0.004) higher risk of hypertension compared with the II genotype for men, whereas salt intake <20.1 g/day and ID+DD genotypes had an OR=0.55 (p=0.014) compared with the II genotype for women. CONCLUSIONS:An interaction of ACE genotype and salt intake on hypertension was observed among Chinese Kazakhs but in different ways according to sex. The GPLTR model appears to be more suitable for an exploration of interactions in complex diseases.

journal_name

BMJ Open

journal_title

BMJ open

authors

Wang Y,Zhang B,Hou L,Han W,Xue F,Wang Y,Tang Y,Liang S,Wang W,Asaiti K,Wang Z,Hu Y,Wang L,Qiu C,Zhang M,Jiang J

doi

10.1136/bmjopen-2016-014246

subject

Has Abstract

pub_date

2017-05-17 00:00:00

pages

e014246

issue

5

issn

2044-6055

pii

bmjopen-2016-014246

journal_volume

7

pub_type

杂志文章

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