Model adjusted odds ratios of IHD incidence for different traffic noise exposed groups of subjects (odds ratio, 95% CI)
| Exposure variable | Noise exposure category | |||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Traffic noise level (dB(A)) | 51–55 | 56–60 | 61–65 | 66–70 |
| Results are given for the total sample (n=3950) and the stratified subsamples of subjects with (n=1519) and without (n=2431) pre-existing diseases (PD). | ||||
| +PD, −PD: subjects with and without pre-existing disease. | ||||
| *Adjusted for room orientation and window opening habits. | ||||
| Traffic noise level | 1.00 | 0.71 (0.46 to 1.11) | 0.68 (0.44 to 1.03) | 1.07 (0.70 to 1.65) |
| −PD | 1.00 | 0.78 (0.42 to 1.47) | 0.97 (0.55 to 1.72) | 1.03 (0.55 to 1.94) |
| +PD | 1.00 | 0.65 (0.35 to 1.23) | 0.44 (0.23 to 0.84) | 1.08 (0.60 to 1.95) |
| Adjusted traffic noise level* | 1.00 | 0.69 (0.42 to 1.12) | 0.64 (0.37 to 1.09) | 1.31 (0.78 to 2.21) |
| −PD | 1.00 | 0.71 (0.35 to 1.43) | 0.89 (0.44 to 1.80) | 0.84 (0.36 to 1.99) |
| +PD | 1.00 | 0.70 (0.35 to 1.38) | 0.43 (0.18 to 1.00) | 1.82 (0.92 to 3.58) |
| Annoyance/disturbances | Never | Seldom | Sometimes | Often + always |
| Annoyance | 1.00 | 0.79 (0.58 to 1.08) | 0.93 (0.68 to 1.27) | 0.95 (0.52 to 1.75) |
| −PD | 1.00 | 0.70 (0.44 to 1.12) | 1.05 (0.67 to 1.65) | 2.45 (1.13 to 5.31) |
| +PD | 1.00 | 0.85 (0.56 to 1.28) | 0.80 (0.52 to 1.23) | 0.43 (0.16 to 1.13) |
| Concentration | 1.00 | 1.03 (0.77 to 1.36) | 0.86 (0.62 to 1.20) | 0.94 (0.50 to 1.74) |
| −PD | 1.00 | 1.21 (0.81 to 1.81) | 0.95 (0.57 to 1.56) | 1.91 (0.77 to 4.74) |
| +PD | 1.00 | 0.86 (0.58 to 1.29) | 0.78 (0.50 to 1.22) | 0.62 (0.23 to 1.44) |
| Conversation, radio, TV | 1.00 | 0.96 (0.72 to 1.29) | 0.91 (0.64 to 1.29) | 1.23 (0.69 to 2.18) |
| −PD | 1.00 | 1.23 (0.82 to 1.86) | 0.78 (0.44 to 1.38) | 2.17 (1.00 to 4.70) |
| +PD | 1.00 | 0.75 (0.49 to 1.15) | 0.97 (0.62 to 1.51) | 0.75 (0.32 to 1.75) |
| Relaxation | 1.00 | 0.86 (0.64 to 1.16) | 0.89 (0.62 to 1.27) | 1.39 (0.76 to 2.54) |
| −PD | 1.00 | 0.94 (0.62 to 1.44) | 0.75 (0.41 to 1.36) | 2.61 (1.14 to 6.01) |
| +PD | 1.00 | 0.77 (0.51 to 1.18) | 1.00 (0.63 to 1.59) | 0.86 (0.36 to 2.04) |
| Nervous or tense | 1.00 | 1.19 (0.88 to 1.60) | 0.92 (0.60 to 1.40) | 1.28 (0.63 to 2.62) |
| −PD | 1.00 | 1.01 (0.63 to 1.61) | 0.98 (0.53 to 1.82) | 3.00 (1.12 to 8.02) |
| +PD | 1.00 | 1.29 (0.87 to 1.91) | 0.86 (0.48 to 1.54) | 0.77 (0.28 to 2.14) |
| Falling asleep | 1.00 | 1.07 (0.42 to 1.76) | 1.09 (0.76 to 1.57) | 0.86 (0.42 to 1.76) |
| −PD | 1.00 | 1.02 (0.65 to 1.60) | 0.76 (0.40 to 1.42) | 1.70 (0.70 to 4.17) |
| +PD | 1.00 | 1.11 (0.72 to 1.71) | 1.34 (0.85 to 2.11) | 0.44 (0.13 to 1.45) |
| Waking up | 1.00 | 1.10 (0.82 to 1.47) | 1.01 (0.74 to 1.39) | 1.38 (0.79 to 2.40) |
| −PD | 1.00 | 1.42 (0.94 to 2.15) | 1.15 (0.71 to 1.86) | 2.06 (0.93 to 4.56) |
| +PD | 1.00 | 0.83 (0.54 to 1.27) | 0.92 (0.60 to 1.40) | 1.05 (0.49 to 2.24) |