Table 2 Mean values for age, number of steps averaged within a participant and subsequently averaged across participants separately for boys and girls. Bedtime and rise time are reported in clock time, total sleep time in hours and sleep efficiency defined as a percentage of total sleep time divided by time in bed
From: Sleep and physical activity: results from a long-term actigraphy study in adolescents
Factor | Mean | Standard deviation | Mean Girls | Standard deviation Girls | Mean Boys | Standard deviation Boys |
|---|---|---|---|---|---|---|
Age (years) | 12.78 | 1.01 | 12.66 | 1.24 | 12.88 | 0.77 |
Steps | 11,608 | 2087 | 10,685 | 4759 | 12,242 | 5717 |
Bedtime (h) | 21:17 | 1.0 | 20:51 | 0.53 | 21:41 | 1.17 |
Risetime (h) | 06:56 | 0.91 | 06:37 | 0.32 | 07:15 | 1.16 |
Total Sleep Time (h) | 8.87 | 0.93 | 8.98 | 0.61 | 8.77 | 1.16 |
Sleep Efficiency (%) | 91.97 | 4.78 | 92.03 | 5.29 | 91.91 | 4.37 |