Table 3.
Adjusteda relative risks for cardiovascular hospital admissions by categorized day- and nighttime road traffic noise
| Noise dB | n of COAs | All cardiovascular diseases |
Ischaemic heart disease |
Stroke |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean nb | RR | 95% CI | Mean nb | RR | 95% CI | Mean nb | RR | 95% CI | |||||
| Adults | |||||||||||||
| LAeq, 16 h | |||||||||||||
| <55 | 5735 | 15 | 1 | 5 | 1 | 2 | 1 | ||||||
| 55–60 | 16 174 | 15 | 1.01 | 1.00 | 1.02 | 5 | 1.00 | 0.98 | 1.02 | 2 | 1.04 | 1.02 | 1.07 |
| >60 | 5777 | 13 | 1.00 | 0.99 | 1.02 | 4 | 1.00 | 0.97 | 1.02 | 2 | 1.05 | 1.02 | 1.09 |
| Lnight | |||||||||||||
| <55 | 21 988 | 15 | 1 | 5 | 1 | 2 | 1 | ||||||
| 55–60 | 3098 | 14 | 0.99 | 0.97 | 1.00 | 5 | 0.99 | 0.97 | 1.01 | 2 | 1.02 | 0.99 | 1.05 |
| >60 | 2600 | 12 | 1.00 | 0.99 | 1.02 | 4 | 1.00 | 0.98 | 1.04 | 2 | 1.01 | 0.98 | 1.05 |
| Elderly | |||||||||||||
| LAeq, 16 h | |||||||||||||
| <55 | 5735 | 7 | 1 | 2 | 1 | 1 | 1 | ||||||
| 55–60 | 16 174 | 7 | 1.02 | 1.01 | 1.04 | 2 | 1.01 | 0.98 | 1.04 | 1 | 1.06 | 1.03 | 1.09 |
| >60 | 5777 | 6 | 1.02 | 0.99 | 1.04 | 2 | 1.01 | 0.97 | 1.05 | 1 | 1.09 | 1.04 | 1.14 |
| Lnight | |||||||||||||
| <55 | 21 988 | 7 | 1 | 2 | 1 | 1 | 1 | ||||||
| 55–60 | 3098 | 6 | 0.99 | 0.97 | 1.01 | 2 | 0.99 | 0.96 | 1.03 | 1 | 1.05 | 1.01 | 1.09 |
| >60 | 2600 | 5 | 1.00 | 0.97 | 1.02 | 1 | 1.00 | 0.97 | 1.06 | 1 | 1.02 | 0.97 | 1.08 |
COA, census output area.
aAdjusted for age, sex, area-level deprivation, ethnicity, smoking, and PM2.5.
bMean number of hospital admissions per COA.