Table 5.

Associations between maternal sleep quality, mood symptoms and gestational age and birth weight in all mothers

Predictor variable	Gestational age (weeks)b		Birth weight (grams)b		Birth weight (z-score)b
	Adjusteda β (SE)	p value	Adjusteda β (SE)	p value	Adjusteda β (SE)	p value
Sleep duration (h)	0.05 (0.03)	0.137	28.06 (12.00)	0.019	0.05 (0.02)	0.053
Sleep need (h)	0.07 (0.04)	0.047	27.61 (12.53)	0.028	0.04 (0.03)	0.126
Sleep loss (h)	0.01 (0.03)	0.767	− 2.70 (11.76)	0.818	− 0.01 (0.02)	0.656
Insomnia score	− 0.06 (0.30)	0.047	− 28.30 (10.94)	0.010	− 0.04 (0.02)	0.065
Sleep quality	− 0.11 (0.08)	0.176	− 62.15 (27.70)	0.0025	− 0.10 (0.06)	0.076
Snoring	0.10 (0.12)	0.391	71.79 (43.26)	0.097	0.13 (0.09)	0.149
Depression score (CES-D)	− 0.01 (0.01)	0.565	− 0.69 (3.59)	0.847	0.00 (0.01)	0.784
Anxiety score (STAI)	− 0.01 (0.01)	0.627	− 4.09 (5.22)	0.434	− 0.01 (0.01)	0.524

β adjusted regression coefficient, SE standard error, CES-D Center for Epidemiologic Studies Depression Scale, STAI State-Trait Anxiety inventory, z-score (a standard deviation score) calculated as a number of standard deviations an individual birth weight differs from population-based mean birth weight value at a certain gestational week of pregnancy

^aAll models are adjusted for age, parity, BMI, general health, smoking and education. All variables are considered as continuous variables except for snoring which was considered as categorical (yes vs no)

^bAll mothers n = 1410

Bolded values are the values which are significant (p<0.05)