Table 2 Exposure characteristics at baseline (1993/1999) in total and by stroke sub-type
From: Long-term exposure to road traffic noise and stroke incidence: a Danish Nurse Cohort study
Parametera | Level | Total | By stroke sub-type | |||
|---|---|---|---|---|---|---|
No stroke | All stroke | Ischemic | Hemorrhagic | |||
N (%) | 25,660 (100) | 24,423 (95.2) | 1237 (4.8) | 1089 (4.2) | 148 (0.6) | |
Lden [dB] | 52.72 (8.17) | 52.68 (8.19) | 53.52 (7.70) | 53.58 (7.65) | 53.10 (8.05) | |
Lden, categorical [dB, tertiles], n (%) | < 48 | 5788 (22.6) | 5539 (22.7) | 249 (20.1) | 217 (19.9) | 32 (21.6) |
48–58 | 13,424 (52.3) | 12,785 (52.3) | 639 (51.7) | 559 (51.3) | 80 (54.1) | |
> 58 | 6448 (25.1) | 6099 (25.0) | 349 (28.2) | 313 (28.7) | 36 (24.3) | |
Ld [dB] | 50.48 (8.21) | 50.44 (8.23) | 51.33 (7.79) | 51.39 (7.74) | 50.88 (8.18) | |
Le [dB] | 48.12 (8.12) | 48.08 (8.14) | 48.94 (7.69) | 49.00 (7.63) | 48.48 (8.11) | |
Ln [dB] | 44.59 (7.93) | 44.55 (7.95) | 45.32 (7.49) | 45.39 (7.43) | 44.83 (7.95) | |
PM2.5 [μg/m3] | 19.77 (3.56) | 19.70 (3.56) | 21.22 (3.31) | 21.27 (3.28) | 20.88 (3.48) | |
PM10 [μg/m3] | 23.64 (3.87) | 23.56 (3.87) | 25.20 (3.54) | 25.21 (3.46) | 25.10 (4.04) | |
NO2 [μg/m3] | 12.65 (8.09) | 12.57 (8.02) | 14.09 (9.31) | 14.05 (9.28) | 14.37 (9.57) | |
NOx [μg/m3] | 19.20 (24.38) | 19.01 (24.00) | 23.09 (30.70) | 22.84 (30.48) | 24.95 (32.30) | |