Table 1.

Characteristics of the included studies

First author	Year	Country	Study design	Population age (years)	Number of cases of hypertension	Exposure levels (dBA)	Adjustments	OR
Rosenlund et al.[6]	2001	Sweden	cross-sectional	19-80	2959	<55; ≥55	Age, sex, smoking, education, physical activity, fruit consumption and house type	Multivariable adjusted
Knipschild[13]	1977	Netherlands	cross-sectional	35-64	5828	20-40; 40-60	Not reported	Unadjusted
GOTO[16]	2002	Japan	cross-sectional	NA	1646	Unexposed; ≥75;	Anti-hypertension treatment, diet, alcohol consumption and smoking	Multivariable adjusted
Eriksson et al.[17]	2010	Sweden	cohort	35-56	4721	<50; ≥50	Age, socioeconomic status, smoking and body mass index, sex (total population only)	Multivariable adjusted
Black[22]	2007	Sydney	cross-sectional	15-87	1500	unexposed; ≥70;	Noise sensitivity, annoyance of traffic and aircraft noise, interaction between aircraft and traffic noise annoyance	Multivariable adjusted