Table 3.

Sleep Parameters (mean ± SD) for Non-Myopic (N = 55) and Myopic (N = 36) Children by Season. 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	Shorter/Cooler Days	Warmer/Longer Days	Shorter/Cooler Days	Warmer/Longer Days
Bedtime	10:07 PM ± 48 min	9:53 PM ± 53 min	10:14 PM ± 65 min	10:17 ± 61 min
	P = 0.01*		P = 0.48
Wake time	6:58 AM ± 39 min	6:44 AM ± 43 min	7:11 AM ± 40 min	7:02 AM ± 40 min
	P = 0.004*		P = 0.06
Sleep duration	7 hrs 36 min ± 44 min	7 hrs 32 min ± 42 min	7 hrs 43 min ± 56 min	7 hrs 35 min ± 52 min
	P = 0.87		P = 0.007*
Sleep latency	16.23 ± 14.51 min	14.27 ± 13.92 min	12.43 ± 10.94 min	10.39 ± 7.5 min
	P = 0.51		P = 0.28
Sleep efficiency	85.97% ± 5.04%	85.97% ± 4.74%	88.04% ± 5.21%	86.93% ± 6.05%
	P = 0.92		P = 0.08

^*Significance at Bonferroni corrected level of 0.05.