A prospective cohort study of breastfeeding practice (0-4 mo) was carried o
ut in well-baby clinics. The cohort included 4438 newborns brought to a cli
nic for the first time between I April and I July 1998. The odds ratios of
demographic and gestational variables connected with the start and duration
of breastfeeding were measured. The frequency of the reasons why breastfee
ding was interrupted was determined. At birth 71% of the infants included i
n this study were exclusively breastfed. After 4 mo the percentage had drop
ped to 21%. Breast milk was replaced directly by formula (23%) or by a mixt
ure of breast milk and formula (77%). Exclusive breastfeeding was given irr
espective of the mother's cultural background. Higher education appeared to
be the most decisive factor for the initiation of exclusive breastfeeding;
higher parity was found to be the most decisive factor for continuation. I
n 46% of cases the infant's health and behaviour caused mothers to stop exc
lusive breastfeeding; in 38% the reasons were mother related; in 17% both m
other- and infant-related motives were mentioned.
Conclusion: Mothers' perception of hunger and crying colics were the main i
nfant-related reasons for cessation of breastfeeding, whereas physical prob
lems, return to work, doubt about the sufficiency of breast milk and the fe
eling of being restricted by breastfeeding were the main mother-related rea
sons. The decision to abandon exclusive breastfeeding was made primarily by
mothers (71%). In The Netherlands more babies are breastfed at birth than
was the case 10 y ago, but the duration of the breastfeeding period has bec
ome shorter.