Longer shared parental leave is associated with longer duration of breastfeeding: a cross-sectional study among Swedish mothers and their partners

Table 2 Background characteristics of the mother, partner, pregnancy, mode of birth and child

*Characteristics of study sample*	*Study sample* *Mean (SD)*	*Study sample* *Frequency (%)*	*Comparison* *Official Statistics Sweden*
Mother
Age, years	31.7 (4.6)		30.3^a
Born outside Sweden		73 (9)	27.5^b
University education		475 (58)	49^b
Previous children		415 (51)	56^a
Partner
Age, years	34.3 (5.5)		34.0^a
Sex: female		14 (2)	d
Born outside Sweden		64 (8)	11.6
University education		349 (43)	38
High household income		510 (63)	550^e
Pregnancy
Level of pregnancy planning
Highly planned		429 (52)	d
Quite planned		215 (26)	d
Neither planned nor unplanned		92 (11)	d
Quite unplanned		28 (3)	d
Highly unplanned		47 (6)	d
Single pregnancy		792 (97)	98^b
Multiple pregnancy		5 (0.6)	1.4^b
Mode of delivery
Spontaneous vaginal		614 (76)	83^b
Induced vaginal		132 (16)	16.7^a
Planned Caesarean		60 (7)	8^b
Complications
Haemorrhage^g (> 1000 ml)		57 (7)	7.2^c
Emergency Caesarean		66 (8)	8^a
Instrumental delivery		65 (8)	7.2^a
Infant
Birth weight, grams	3585 (550.5)		3565^b
Gestational age, weeks	39 (1.6)		39-40^b
Sex
Girl		401 (49.4)	48.6^b
Boy		410 (50.5)	51.3^b
Neonatal care		46 (6)	~ 10 ^b,e
Congenital state in need of care
Malformation		12 (1)	2-3^a
Injury		2 (0.2)	2-3^a
Disease		19 (2)	3.7/1000^a

ISSN: 1471-2431