Table 3 Sleep variables (mean ± s.d.).

From: Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep

Sleep variables Total (n = 106) Boys (n = 50) Girls (n = 56) p value
Bedtime 21:07 ± 0:46 21:04 ± 0:44 21:10 ± 0:48 0.444
Sleep onset time 21:35 ± 0:47 21:33 ± 0:46 21:37 ± 0:48 0.639
Wake time 7:04 ± 0:46 6:59 ± 0:45 7:10 ± 0:46 0.217
Sleep latency 27.7 ± 12.0 28.6 ± 12.5 27.0 ± 11.6 0.494
Nighttime sleep duration 8.37 ± 0.88 8.32 ± 0.79 8.42 ± 0.96 0.576
Nap duration 1.90 ± 0.47 1.94 ± 0.42 1.87 ± 0.51 0.500
Total sleep duration 10.26 ± 0.86 10.24 ± 0.80 10.28 ± 0.91 0.826
Nap onset time 12:46 ± 1:01 12:50 ± 1:04 12:43 ± 0:59 0.534
Nap end time 15:07 ± 0:57 15:11 ± 0:57 15:04 ± 0:58 0.499
Sleep efficiency 88.7 ± 7.0 88.6 ± 6.9 88.8 ± 7.2 0.881
WASO (wake after sleep onset) 63.6 ± 39.8 63.9 ± 39.8 63.2 ± 40.2 0.930