Effect of metabolic syndrome on coronary heart disease in rural minorities of Xinjiang: a retrospective cohort study

Table 3 Multiplicative interactions among components of metabolic syndrome on the risk of coronary heart disease

Interaction items	N	CHD, n (%)	HR ^b (95% CI)	Multiplicative SI ^b (95%CI)
Elevated FBG ⁻ / Elevated blood pressure ⁻	3168	50 (1.58)	1 (ref)	0.79 (0.39–1.58)
Elevated FBG ⁺ / Elevated blood pressure ⁻	3264	182 (5.58)	1.95 (1.41–2.70)
Elevated FBG ⁻ / Elevated blood pressure ⁺	293	12 (4.1)	2.29 (1.22–4.30)
Elevated FBG ⁺ / Elevated blood pressure ⁺	557	60 (10.77)	3.51 (2.37–5.19)
Elevated blood pressure ⁻/ Other components ⁻	3100	49 (1.58)	1 (ref)	1.50 (0.76–2.77)
Elevated blood pressure ⁺/ Other components ⁻	2464	159 (6.45)	2.65 (1.51–4.63)
Elevated blood pressure ⁻/ Other components ⁺	299	13 (4.35)	1.00 (0.57–1.75)
Elevated blood pressure ⁺/ Other components ⁺	1115	83 (7.44)	3.97 (2.42–6.51)
Elevated FBG ⁻/ Other components ⁻	4896	144 (2.94)	1 (ref)	1.91 (0.67–3.43)
Elevated FBG ⁺/ Other components ⁻	668	64 (9.58)	1.55 (0.74–3.25)
Elevated FBG ⁻/ Other components ⁺	1304	88 (6.75)	1.21 (0.90–1.65)
Elevated FBG ⁺/ Other components ⁺	110	8 (7.27)	3.58 (2.49–5.15)

FBG fasting blood glucose, CHD coronary heart disease, HR hazard ratio, CI confidence interval. Other components, one or more components are abnormal among the three components except blood sugar and blood pressure (large waistline, high TG, low HDL-C)
N is the number of participants in the interaction items. ^b Adjustment for alcohol consumption, smoking status, age, sex and family history of hypertension, family history of diabetes and family history of coronary heart disease

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