Table 1.

Demographics of mothers and neonates included in the analyses (n = 142).

	Mean ± SD or % (n)	Range
Mother
Age (years)a	30.8 ± 4.7	18.9–42.2
BMI (kg/m2)b	24.4 ± 4.6	17.1–45.6
Nulliparousc	58.3% (74)
Multiparousc	41.7% (53)
BNSQ insomniad at gwk 24	7.7 ± 2.1	4–12
BNSQ sleep losse at gwk 24	1.0 ± 1.0	−1.5–4.0
BNSQ sleepinessd at gwk 24	5.5 ± 2.2	2–10
EPDSd at gwk 24	5.1 ± 4.9	0–25
Neonate
Sex (girls/boys)	47.9% (68)/52.1% (74)
Gestational weeks at birth	40.0 ± 1.2	36.1–42.3
Birth weight (g)	3579 ± 443	2635–5470
Age at EEG recording (days)	1.4 ± 1.0	0–5

Note: BNSQ = Basic Nordic Sleep Questionnaire; EPDS = Edinburgh Postnatal Depression Scale; gwk = gestational week.

Some data were missing due to attrition in questionnaire and register data acquisition.

Data available for ^an = 108, ^bn = 140, ^cn = 127, ^dn = 121, ^en = 119.