. 2023 Mar 22;131(3):037012. doi: 10.1289/EHP10757

Table 1.

Participant demographics in the laboratory-based three-arm crossover study of 72 h of exposure to simulated wind turbine infrasound, sham infrasound, and traffic noise.

Variable	Descriptive statistics	Range
Sex, $n$
Females	19
Males	18
Age [y ( $mean \pm SD$ )]	$32 \pm 12$	18–72
Weinstein Noise Sensitivity Score (0–126 points) ( $mean \pm SD$ )	$83.0 \pm 13.4$	64–108
Insomnia Severity Scale (0–28 points) ( $mean \pm SD$ )	$5.3 \pm 4.4$	0–16
DASS-21²³—Depression (0–21 points) ( $mean \pm SD$ )	$3.7 \pm 4.3$	0–16
DASS-21²³—Anxiety (0–21 points) ( $mean \pm SD$ )	$2.5 \pm 3.5$	0–12
Epworth Sleepiness Scale (0–24 points) ( $mean \pm SD$ )	$4.7 \pm 3.4$	0–13
Attitude toward windfarm (0–6) [median]	3	0–6, including 7 participants with scores $greater than 3$

Note: There were no data missing for any of these variables; baseline data was complete in all participants. Weinstein scores had to be $greater than 58$ to be eligible (approximately the median value in community-dwelling people, rather than a cutoff value indicative of a person being noise sensitive) and an Insomnia Severity Index (ISI) of $less than or equal to 18$ . ISI scores $less than 8$ indicate no insomnia; $less than 15$ , subthreshold insomnia; and $less than 22$ , moderate severity insomnia. Participants had to be at least 18 years of age. No other metrics reported were subject to inclusion/exclusion for a participant to be eligible. Scores $less than 10$ on the DASS Depression scale indicate no depression, scores between 10 and 13 indicate mild depression, and scores between 14 and 20 indicate moderate depression. Scores $less than 8$ on the DASS Anxiety scale indicate no anxiety, scores between 8 and 9 mild anxiety, and scores between 10 and 14 moderate anxiety. Scores $greater than 10$ on the Epworth Sleepiness Scale indicate clinically significant daytime sleepiness, and scores $greater than 16$ severe daytime sleepiness (see the “Participants” section in the “Methods” section for more detail). Attitude toward windfarm was scored from 0 (completely unconcerned) to 6 (extremely concerned). DASS, Depression Anxiety and Stress Scale; SD, standard deviation.