Table 2.
Descriptive statistics for each meta-analysis of age and actigraphy-assessed sleep
| Sleep duration | Sleep efficiency | Bedtime, ages 6–21 | Bedtime, ages 22 and older | Wake-up time, ages 6–21 | Wake-up time, ages 22 and older | |
|---|---|---|---|---|---|---|
| M (range) | M (range) | M (range) | M (range) | M (range) | M (range) | |
| Sample size | 247.0 (12–3055) | 202.2 (14–3055) | 290.9 (21–1231) | 323.4 (11–3055) | 186.2 (21–417) | 503.3 (15–3055) |
| Mean age | 31.8 (6.5–91.9) | 36.4 (6.5–91.9) | 11.2 (7.6–17) | 44.6 (22.5–91.9) | 10.9 (9.23–15.5) | 38.7 (22.5–91.9) |
| % Female | 59.8 (0–100) | 60.9 (0–100) | 49.75 (28.6–77) | 42.7 (0–68.2) | 50.5 (28.6–68.2) | 35.9 (0–63.9) |
| Number of nights | 6.6 (1–29) | 6.4 (2–20) | 5.8 (2–7.1) | 7.2 (5–13.6) | 6.0 (2–7) | 6.6 (5.2–7) |
M indicates mean. Number of nights indicates number of nights of actigraphy data collected.