Table 1.
Demographics of Study Participants From the Reference and Exposed Groups
| Variable | Reference | Exposed | Test of independence | |
|---|---|---|---|---|
| Sex (n) | Women | 15 | 12 | χ 2(1) = 0.297 p = 0.586 |
| Men | 11 | 12 | ||
| Age (mean, years) | 50.7 ± 10.5 | 51.8 ± 9.0 | t(48) = −0.321 p = 0.749 | |
| BMI (mean, kg/m2) | 25.6 ± 3.4 | 25.3 ± 3.1 | t(48) = 0.380 p = 0.706 | |
| Health status (n)* | Very good | 5 | 4 | χ 2(3) = 0.622 p = 0.891 |
| Rather good | 14 | 15 | ||
| Neither good nor bad | 4 | 3 | ||
| Rather bad | 1 | 2 | ||
| Very bad | 0 | 0 | ||
| Regular medication use (n) | 9 | 7 | χ 2(1) = 0.260 p = 0.610 | |
| General attitude to wind turbines (n) | Very positive | 6 | 3 | χ 2(4) = 13.17 p = 0.008 |
| Positive | 17 | 7 | ||
| Neither positive or negative | 3 | 7 | ||
| Negative | 0 | 6 | ||
| Very negative | 0 | 1 | ||
| Attitude to impact on landscape (n) | Very positive | 0 | 0 | χ 2(3) = 26.6 p < 0.0001 |
| Positive | 13 | 1 | ||
| Neither positive or negative | 12 | 6 | ||
| Negative | 1 | 11 | ||
| Very negative | 0 | 6 | ||
| Annoyed or disturbed by WTN at home over last month (mean, 1–5) | — | 3.5 ± 1.3 | ||
| Annoyance by WTN indoors at home over last month (mean, 1–5) | — | 2.5 ± 1.1 | ||
| Annoyance by WTN outdoors at home over last month (mean, 1–5) | — | 3.7 ± 1.1 | ||
| Sleep disturbance by WTN at home over last month (mean, 1–5) | — | 2.2 ± 1.3 | ||
| Duration of residence (mean, years) | — | 20.1 ± 15.7 | ||
| Tiredness in mornings (mean, 0–10) | 3.5 ± 2.0 | 6.3 ± 2.4 | t(47) = 4.325 p < 0.0001 | |
| Tense in mornings (mean, 0–10) | 3.4 ± 1.7 | 4.5 ± 2.1 | t(47) = 2.023 p = 0.049 | |
| Noise sensitivity score (mean)† | 74.6 ± 17.2 | 79.1 ± 13.3 | t(43) = 0.992 p = 0.327 |
Data reported as frequencies (n) or means ± standard deviations.
*Two participants did not respond to the health status item.
†Weinstein noise sensitivity scale [37].