Table 4 Associations between 1-year mean road traffic noise level (continuous and categorical) and all incident stroke

All

L_den, continuous^a

1237

1.06 (0.99–1.13)

1.06 (0.98–1.14)

1.01 (0.93–1.09)

1.03 (0.95–1.11)

1.00 (0.91–1.09)

1.01 (0.92–1.10)

L_den, cat: < 48 dB

249

[ref]

[ref]

[ref]

[ref]

[ref]

[ref]

L_den, cat: 48–58 dB

639

1.10 (0.95–1.27)

1.12 (0.96–1.31)

1.08 (0.92–1.28)

1.11 (0.94–1.30)

1.08 (0.91–1.27)

1.10 (0.93–1.29)

L_den, cat: > 58 dB

349

1.13 (0.96–1.32)

1.13 (0.95–1.34)

1.02 (0.85–1.23)

1.07 (0.89–1.28)

0.99 (0.80–1.22)

1.02 (0.84–1.24)

Ischemic

L_den, continuous^a

1089

1.06 (0.99–1.14)

1.06 (0.98–1.14)

1.00 (0.92–1.09)

1.03 (0.94–1.12)

0.98 (0.89–1.09)

1.00 (0.92–1.10)

L_den, cat: < 48 dB

217

[ref]

[ref]

[ref]

[ref]

[ref]

[ref]

L_den, cat: 48–58 dB

559

1.04 (0.89–1.22)

1.05 (0.89–1.24)

1.02 (0.86–1.21)

1.04 (0.88–1.24)

1.01 (0.85–1.21)

1.03 (0.87–1.23)

L_den, cat: > 58 dB

313

1.10 (0.93–1.31)

1.10 (0.92–1.32)

0.99 (0.81–1.21)

1.05 (0.86–1.27)

0.95 (0.76–1.19)

1.00 (0.81–1.23)

Hemorrhagic

L_den, continuous^a

148

1.04 (0.86–1.26)

1.06 (0.87–1.30)

1.05 (0.84–1.31)

1.04 (0.84–1.29)

1.10 (0.84–1.43)

1.03 (0.81–1.30)

L_den, cat: < 48 dB

32

[ref]

[ref]

[ref]

[ref]

[ref]

[ref]

L_den, cat: 48–58 dB

80

1.64 (1.04–2.57)

1.82 (1.10–3.02)

1.69 (1.02–2.82)

1.71 (1.03–2.84)

1.72 (1.03–2.87)

1.69 (1.01–2.80)

L_den, cat: > 58 dB

36

1.33 (0.81–2.18)

1.41 (0.81–2.45)

1.31 (0.74–2.34)

1.30 (0.74–2.30)

1.37 (0.73–2.58)

1.22 (0.67–2.23)