Table 2.

Sleep Parameters (mean ± SD) for Non-Myopic (N = 55) and Myopic (N = 36) Children by Day of the Week. Parameters Include Mean Daily Bedtime, Wake Time, Sleep Duration (minutes), Sleep Latency (minutes), and Sleep Efficiency (%); P Value Shown for Bonferroni Corrected Pairwise Comparisons

	Non-Myopic		Myopic
Sleep Parameter	Weekday	Weekend	Weekday	Weekend
Bedtime	9:50 PM ± 44 min	10:37 PM ± 67 min	10:01 PM ± 61 min	10:44 PM ± 66 min
	P < 0.001*		P < 0.001*
Wake time	6:34 AM ± 37 min	7:38 AM ± 57 min	6:44 AM ± 30 min	8:01 AM ± 71 min
	P < 0.001*		P < 0.001*
Sleep duration	7 hrs 32 min ± 41 min	7 hrs 40 min ± 51 min	7 hrs 35 min ± 54 min	8 hrs 9 min ± 53 min
	P = 0.33		P < 0.001*
Sleep latency	14.35 ± 11.91 min	17.6 ± 16.24 min	12.25 ± 9.12 min	8.77 ± 6.36 min
	P = 0.03*		P = 0.05
Sleep efficiency	86.2% ± 4.56%	85.35% ± 4.99%	87.45% ± 5.19%	87.82% ± 5.01%
	P = 0.03*		P = 0.51

^*Significance at Bonferroni corrected level of 0.05.