Table 2.

Sleep arrangements and sleep variables by gender (number or mean ± s.d., *p < 0.05).

		Boys (n = 44)	Girls (n = 57)	p-value
Home environment
Siblings
Yes		29 (28.7%)	39 (38.6%)
No		15 (14.9%)	18 (17.8%)	0.790
Child having own room
Yes		2 (2.0%)	2 (2.0%)
No		42 (41.6%)	55 (54.5%)	0.791
Co-sleeping with parents
Yes		33 (32.7%)	45 (44.6%)
No		11 (10.9%)	12 (11.9%)	0.639
Nighttime feeding
Breastmilk		16 (15.8%)	15 (14.9%)
Formula		6 (5.9%)	9 (8.9%)
No feeding		22 (21.8%)	33 (32.7%)	0.555
Putting children to sleep with formula
Yes		22 (21.8%)	16 (15.8%)
No		22 (21.8%)	41 (40.6%)	0.024*
Nap during daytime
Yes		44 (43.6%)	57 (56.4%)
No		0 (0.0%)	0 (0.0%)	n.a
Child attending kindergarten
Yes		14 (13.9%)	17 (16.8%)
No		30 (29.7%)	40 (39.6%)	0.829
Bed time
Weekday	20:56 ± 0:41	20:44 ± 0:39	21:06 ± 0:41	0.701
Weekend	20:58 ± 0:50	20:50 ± 0:45	21:03 ± 0:53	0.254
p-value	0.122	0.513	0.097
Wake time
Weekday	06:56 ± 0:39	06:56 ± 0:37	06:57 ± 0:40	0.534
Weekend	07:04 ± 0:48	07:01 ± 0:49	07:07 ± 0:48	0.987
p-value	0.110	0.166	0.300