Table 1.
Demographics and drug use history of study groups.
| Placebo | Zolpidem | ||
|---|---|---|---|
| N | 17 | 16 | |
| Average age (range) | 52 (34–70) | 51.5 (23–68) | |
| Gender | Males: 8 | Males: 7 | |
| Females: 9 | Females: 9 | ||
| Insomnia measures | |||
| Reported sleep time (hrs) | 5.76±0.26 | 5.56±0.34 | |
| ±SD | 6.0 | 5.75 | |
| NPSG sleep time (hrs) mean ±SD; | 5.82±0.19 | 6.03±0.17 | |
| median | 5.90 | 6.14 | |
| LPS NPSG (min)±SD | 45.25±10.45 | 38.44±7.92 | |
| (median; range) | (32.5; 6–169) | (27; 6.5–114.5) | |
| WASO NPSG (min) ±SD | 106.66±10.80 | 98.18±8.37 | |
| (range) | (111; 38.5–185.5) | (96.5; 37.5–171) | |
| Age of insomnia onset | 40.67 | 35.77 | |
| (median; range) | (41; 20–60) | (35; 12–55) | |
| Duration of insomnia (yrs) | 11.47 | 18.66 | |
| (median; range) | (8; 1–31) | (11.5; 3–43) | |
| Self-reported alcohol and drug consumption | |||
| Alcohol beverages (No. drinks/week: No. self-reporting) | 0–1: 11 | 0–1: 9 | |
| 2–6: 3 | 2–6: 5 | ||
| 7–14: 2 | 7–14: 1 | ||
| 16: 1 | 16: 1 | ||
| Caffeinated products (No. drinks/week: No. self-reporting) |
0–1: 2 | 0–1: 5 | |
| 2–6: 4 | 2–6: 5 | ||
| 7–14: 6 | 7–14: 1 | ||
| 15 or more: 5 | 15 or more: 5 | ||
| Previous illicit drug history | No drug history: 12 | No drug history: 13 | |
| Marijuana use | Marijuana use | ||
| ≥2 yrs ago: 2 | ≥2yrs ago: 0 | ||
| Marijuana use | Marijuana use | ||
| ≥20 yrs ago: 3 | ≥20 yrs ago: 3 | ||
| Current nicotine usage | Nonsmokers: 15 | Nonsmokers: 15 | |
| ≤15 cigarettes/day: 2 | ≤10 cigarettes/day: 1 | ||