[The comparison of mean body weight among breast-fed and bottle-fed children from 1 to 18 month of life].
There were performed many analyses comparing physical development between breast-fed and bottle-fed infants and estimated that breast-fed children have different growth than bottle-fed. The aim of the study was the comparison of body weight rate among breast-fed and bottle-fed children from 1-18 month of life.


METHODS
352 children were enrolled into the analysis: 218 breast-fed and 134 bottle-fed children. We documented age, sex, environment of life, birth weight and weight at the moment of hospitalisation. We compared: mean weight at the moment of hospitalisation, mean increment of weight, mean monthly increment of weight in breast- and bottle-fed children.


RESULTS
Breast-fed girls achieved higher mean monthly weight increment in 1st quarter of life than bottle-fed. Bottle-fed girls achieved higher mean body weight and increment of weight than breast-fed in 4th quarter. Bottle-fed boys achieved higher mean weight, mean increment of weight in 1st, 3rd and 6th quarter of life and higher monthly increment of weight in the 1st quarter of life than breast-fed.


CONCLUSIONS
On the basis of performed analysis we confirm that breast-fed and bottle-fed children in the first 18 months of life increase body weight at a different rate.
Loś-Rycharska
Ewa
E
Katedry i Kliniki Pediatrii, Alergologii i Gastroenterologii Collegium Medicum im. L. Rydygiera w Bydgoszczy Uniwersytetu Mikołaja Kopernika w Toruniu.
Adamska
Inga
I
Swincow
Grazyna
G
Czerwionka-Szaflarska
Mieczysława
M
D049628:Body Size / Q000502:physiology; D001835:Body Weight / Q000502:physiology*; D001903:Bottle Feeding; D001942:Breast Feeding; D002657:Child Development / Q000502:physiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011044:Poland; D012016:Reference Values; D012727:Sex Characteristics; D015430:Weight Gain / Q000502:physiology