Table 1.
Demographic Data Across Young and Older Adults and Nap/Wake Conditions.
| Young adults | Older adults | |||
|---|---|---|---|---|
| Nap condition (n = 30) | Wake condition (n = 20) | Nap condition (n = 29) | Wake condition (n = 16) | |
| Age (y) | 21.40 (2.61) | 21.40 (3.39) | 69.69 (7.05) | 70.13 (7.78) |
| Gender (% female) | 66.7% | 60% | 51.7% | 62.5% |
| Education (y) | 14.87 (2.11) | 14.45 (2.01) | 16.16 (3.66) | 15.47 (2.31) |
| Mini-Mental State Examination | 29.20 (0.92) | 28.90 (1.17) | 28.69 (1.20) | 29.13 (0.96) |
| Mill Hill Vocabulary Test | 0.72 (0.09) | 0.72 (0.08) | 0.72 (0.11) | 0.71 (0.16) |
| Race/ethnicity (% Caucasian) | 30% | 20% | 65.5% | 75% |
| Mean total sleep time (1-wk sleep diary) | 8.10 (1.06) | 7.92 (1.36) | 7.77 (1.28) | 7.59 (0.90) |
| Pittsburgh Sleep Quality Index—Global | 4.20 (2.27) | 4.80 (1.11) | 5.03 (2.82) | 5.19 (1.52) |
| Epworth Sleepiness Scale | 8.97 (3.66) | 8.85 (3.76) | 7.83 (3.45) | 8.06 (3.84) |
| Diabetes (self-report) | 0% | 5% | 20.7% | 12.5% |
| Hypertension (self-report) | 0% | 5% | 51.7% | 37.5% |
| MEQ (overall mean score) | 44.52 (9.73) | 46.10 (8.73) | 44.72 (14.46) | 49.25 (14.84) |
| MEQ: 16–30 (definite evening type) | n = 2 | n = 2 | n = 5 | n = 4 |
| MEQ: 31–41 (moderate evening type) | n = 9 | n = 2 | n = 6 | n = 1 |
| MEQ: 42–58 (intermediate type) | n = 16 | n = 16 | n = 11 | n = 5 |
| MEQ: 59–69 (moderate morning) | n = 1 | n = 0 | n = 5 | n = 5 |
| MEQ: 70–86 (definite morning type) | n = 1 | n = 0 | n = 0 | n = 1 |
SDs are presented in parentheses. Note that there were data missing from one young adult and two older adults on the MEQ. MEQ = Morningness-Eveningness Questionnaire.