. 2014 Oct 30;91(6):1144–1157. doi: 10.1007/s11524-014-9916-1

TABLE 4.

Association between the prevalence of hypertension and road traffic noise exposure stratified by gender and exposure levels

L _den, dB(A) (range 55.1–77.9)	Prevalence of hypertension (n = 909) (%)	All	Male	Female
L _den, dB(A) (range 55.1–77.9)	Prevalence of hypertension (n = 909) (%)	OR (95 % CI)^a	OR (95 % CI)^a	OR (95 % CI)^a
L _den-5 (continuous)	17.7	1.99 (1.66–2.39)	1.81 (1.42–2.31)	2.18 (1.66–2.88)
<60^b	8.4	1.00
60–65	14.6	2.20 (1.21–4.03)	1.93 (0.84–4.45)	2.57 (1.06–6.23)
65–70	20.7	3.90 (2.20–6.91)	2.85 (1.29–6.29)	5.48 (2.37–12.67)
≥70	33.2	8.24 (4.63–14.6)	6.25 (2.90–13.51)	10.64 (4.40–25.7)

OR (95 % CI) odds ratio (95 % confidence interval)

^aAdjusted for age, BMI, other chronic disease, family history of CVD

^bReferent level