Reliability and validity of the German version of the Iowa infant feeding attitude scale (IIFAS-G) and relations to breastfeeding duration and feeding method

Table 1 Sample characteristics

	M	SD
mother age^a (years)	34.99 range = 22–51	4.21
primipara	34.68	4.28
multipara	35.53	4.05
child age (months)	10.84 range = 0–18	4.66
gestational age at birth (weeks)	39.38 range = 24–44	2.14
	N	%
parity
primipara	223	63.17
multipara	130	36.83
residence
Switzerland	319	90.37
other	34	9.63
migration background^c
yes	196	55.52
no	157	44.78
educational level
≥ tertiary	256	72.52
< tertiary	97	27.48
employment status
full-time employment^d	47	13.31
part-time employment	192	54.39
maternity leave	75	21.25
other (e.g. school, infrequent working, unpaid leave)	23	6.52
unemployed	16	4.53
monthly household income after taxes in CHF^e
< 3’300	12	3.41
3’300–4’300	9	2.56
4’300–5’300	15	4.26
5’300–6’300	27	7.67
6’400–7’500	38	10.80
7’500–8’700	32	9.09
8’700–10’100	51	14.49
10’100–12’000	50	14.20
12’000–15’300	51	14.49
> 15’300	46	13.07
preferred not to answer	13	3.69
child gender
female	167	47.31
male	185	52.41
not defined	1	0.28

^a 30 mothers reported implausible age values (e.g., age = 0 years or 130 years)
^b for one child an implausible gestational age at birth was entered (9 weeks)
^c migration background was defined as being born outside the country of residence
^d at least 90% of the regular working time (e.g., 37.8 h/week in Switzerland)
^e income was assessed based on the categories of the European Social Survey; currencies other than CHF were transformed to the equivalent CHF categories

ISSN: 1746-4358