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. Author manuscript; available in PMC: 2018 Mar 13.
Published in final edited form as: Neuroepidemiology. 2017 Jul 26;48(3-4):147–154. doi: 10.1159/000479066

Table 1.

Demographics of the NSHAP Wave 2 Olfaction-Sleep subsample (N=354)

Characteristic Weighted Value N
Age, mean (sd) 71.7 (7.5) 354
Female 53.6% 354
Race 354
 White 82.3%
 African American 6.2%
 Hispanic 6.3%
 Other 5.2%
Modified Charlson Comorbidity 354
 0 48.1%
 1 25.4%
 2 14.0%
 3+ 12.4%
Montreal Cognitive Assessment – Survey Adapted, 0-20 scale, mean (sd) 14.2 (3.5) 354
Body Mass Index, mean (sd) 29.1 (5.50) 345
Current Smoker 13.6% 354
CES-D1, mean (sd) 7.3 (3.3) 354
Medication Usage
 Antidepressants 17.4% 334
 Sleep Aids 8.7% 334
Actigraph-Measured Sleep 354
 WASO2 (minutes), mean (sd) 37.5 (22.6)
 Total Sleep Time (hours), mean (sd) 7.2 (1.4)
  Less than 5 hours, % 5.5 %
  5 to 8 hours, % 70.2%
  More than 8 hours, % 24.3%
 Fragmentation (%) 14.2 (5.9)
Self-Reported Sleep Duration (hours), mean (sd) 7.4 (1.3) 287
Troubled Sleep Scale3, mean (sd) 2.7 (2.1) 354
Olfactory Function Field Exam
 Odor Identification (score)4 354
  0 2.9%
  1 1.3%
  2 6.0%
  3 7.8%
  4 30.7%
  5 51.3%
 Odor Sensitivity (score)5 354
  0 7.1%
  1 8.5%
  2 12.4%
  3 15.9%
  4 23.8%
  5 25.3%
  6 7.1%
1

CES-D (range:0-22): Center for Epidemiologic Study Depression Scale

2

Wake after sleep onset

3

Troubled Sleep Scale (range:0-8) is a combined metric (0 = Never/rarely, 1 = Sometimes, 2 = Most of the time) from four questions: feeling rested in the morning, trouble falling asleep, trouble waking during the night and trouble waking too early

4

Odor identification (range: 0-5) is measured via correct identification of five odorants: rose, leather, orange, fish, and peppermint.

5

Odor sensitivity (range: 0-6) is assessed by participants’ capacities to detect n-butanol.