From: Mechanics of sucking: comparison between bottle feeding and breastfeeding
Data | Age Groups and Type of Feeding | |||
---|---|---|---|---|
21-28 days | 3-5 months | |||
Breastfeeding only (n = 62) | Bottle feeding only (n = 62) | Mixed feeding (n = 110) | Mixed feeding (n = 125) | |
Mother, age, years, mean ± SD | 32.0 ± 4.8 | 31.9 ± 4.6 | 32.7 ± 5.4 | 32.5 ± 4.5 |
Type of pregnancy, n (%) | ||||
Single | 62 (100) | 54 (93.1) | 80 (85.1) | 104 (90.4) |
Twins | 0 (0) | 4 (6.9) | 14 (14.9)‡ | 11 (9.6)§ |
Sex of the infant, no, (%) | ||||
Male | 35 (56.5) | 30 (49.2) | 54 (49.5) | 64 (51.2) |
Female | 27 (43.5) | 31 (50.8) | 55 (50.5) | 61 (48.8) |
Gestational age, wk, mean ± SD | 39.8 ± 1.2 | 39.4 ± 1.6 | 39.0 ± 1.3 | 39.4 ± 1.4 |
Birth weight, g, mean ± SD | 3301.6 ± 349.2 | 3238.8 ± 501.9 | 3214.2 ± 429.8 | 3241.1 ± 451.4 |
Infant's age on the first feeding measure, days, mean ± SD | 25.4 ± 2.1 | 24.5 ± 2.6 | 24.5 ± 3.6 | 120.8 ± 52.9 |
Feedings per day in the last week | ||||
Breastfeeding, mean ± SD | NA | NA | 5.8 ± 1.9 | 4.4 ± 1.7 |
Bottle feeding, mean ± SD | NA | NA | 5.0 ± 2.2 | 3.7 ± 1.6 |
Time since the last feeding, h, mean ± SD | 2.8 ± 0.7 | 3.2 ± 0.6 | 3.1 ± 0.6* 3.1 ± 0.7† | 3.5 ± 1.5* 3.4 ± 1.1† |