Table 2.

Associations between mean 1- and 5-y exposure to residential A-weighted outdoor wind turbine noise and redemption of prescriptions for sleep medication and antidepressants.

Outdoor wind turbine noise	Sleep medication			Antidepressants
	Cases (n)	Crude HR (95% CI)a	Adjusted HR (95% CI)b	Cases (n)	Crude HR (95% CI)a	Adjusted HR (95% CI)b
1-y mean exposure (dB)
$<24$	50,262	1 (Ref)	1 (Ref)	60,205	1 (Ref)	1 (Ref)
$24–30$	13,032	0.98 (0.96, 0.99)	1.01 (0.99, 1.03)	15,782	0.98 (0.96, 1.00)	1.00 (0.98, 1.02)
$30–36$	4,415	0.96 (0.93, 0.99)	1.04 (1.00, 1.07)	5,295	0.95 (0.93, 0.98)	1.01 (0.99, 1.04)
$36–42$	842	0.95 (0.89, 1.02)	1.05 (0.98, 1.13)	930	0.89 (0.84, 0.95)	0.99 (0.93, 1.05)
$\ge 42$	145	0.99 (0.84, 1.17)	1.08 (0.92, 1.28)	161	0.99 (0.85, 1.15)	1.12 (0.96, 1.31)
5-y mean exposure (dB)
$<24$	50,559	1 (Ref)	1 (Ref)	60,315	1 (Ref)	1 (Ref)
$24–30$	13,021	1.00 (0.98, 1.02)	1.03 (1.01, 1.05)	15,958	1.01 (0.99, 1.02)	1.02 (1.00, 1.04)
$30–36$	4,133	0.97 (0.93, 1.00)	1.03 (1.00, 1.06)	5,016	0.96 (0.94, 0.99)	1.02 (0.99, 1.05)
$36–42$	814	0.98 (0.92, 1.05)	1.08 (1.00, 1.15)	899	0.92 (0.86, 0.98)	1.01 (0.95, 1.08)
$\ge 42$	169	1.06 (0.91, 1.23)	1.14 (0.98, 1.33)	185	1.05 (0.90, 1.21)	1.17 (1.01, 1.35)

Note: CI, confidence interval; HR, hazard ratio; Ref, reference.

^aAdjusted for age, sex, and calendar-year.

^bAdjusted for age, sex, calendar-year, personal income, education, marital status, work-market affiliation, area-level socioeconomic status, type of dwelling, traffic load in a $500\text{-}\mathrm{m}$ radius, and distance to nearest major road.