Table 4.
Sample characteristics (both survey waves pooled).
| Ldn a Category (dB(A)) | n | % of Sample | % Female | Mean Age (Years) | Mean of Occupancy (Years) | %HA (5-Point) | %HA (11-Point) | MA (5-Point) b | MA (11-Point) b |
|---|---|---|---|---|---|---|---|---|---|
| ≤50 | 15 | 0.63 | 60.00 | 52.20 | 14.67 | 6.67 | 6.67 | 18.33 | 26.00 |
| 50.0–52.5 | 49 | 2.05 | 57.14 | 54.18 | 17.08 | 8.16 | 2.04 | 19.90 | 20.21 |
| 52.5–55.0 | 183 | 7.67 | 56.83 | 53.03 | 14.60 | 12.57 | 10.38 | 27.34 | 28.11 |
| 55.0–57.5 | 247 | 10.35 | 55.47 | 54.28 | 14.09 | 9.31 | 6.48 | 27.35 | 29.35 |
| 57.5–60.0 | 282 | 11.82 | 52.84 | 54.34 | 15.60 | 11.70 | 9.93 | 30.36 | 31.87 |
| 60.0–62.5 | 370 | 15.51 | 54.86 | 52.73 | 14.08 | 18.92 | 15.14 | 34.76 | 37.68 |
| 62.5–65.0 | 373 | 15.63 | 54.96 | 53.48 | 15.34 | 21.72 | 17.96 | 37.74 | 40.54 |
| 65.0–67.5 | 426 | 17.85 | 46.95 | 51.79 | 15.00 | 28.87 | 25.59 | 42.61 | 45.88 |
| 67.5–70.0 | 278 | 11.65 | 58.99 | 50.74 | 14.57 | 26.98 | 22.66 | 42.09 | 45.93 |
| ≥70 | 163 | 6.83 | 54.60 | 52.57 | 14.77 | 29.45 | 23.31 | 44.33 | 49.25 |
a Day–Night Level; b Original scale values linearly transformed to a 0 to 100 scale using discrete point conversion (see Section 2.3.1); %HA: percentage highly annoyed; MA: Mean annoyance score.