Table 2.
Anthropometric Measures (Mean (SD)) and Breastfeeding (%) of Infants in the PROBIT Cohort Recruited in Belarus in 1996–1997a
| Birth(n = 17,046) |
1 month(n = 16,692) |
2 months(n = 16,420) |
3 months(n = 16,629) |
6 months(n = 16,405) |
9 months(n = 16,089) |
12 months(n = 16,471) |
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| Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | |
| Weight, kg | 3.44 (0.42) | 4.33 (0.50) | 5.23 (0.58) | 6.12 (0.68) | 8.10 (0.85) | 9.50 (0.94) | 10.58 (1.01) | |||||||
| Length, cm | 51.9 (2.1) | 54.8 (2.3) | 57.8 (2.4) | 61.0 (2.5) | 67.2 (2.7) | 71.9 (2.7) | 75.9 (2.7) | |||||||
| WAZ | 0.3 (0.8) | 0.0 (0.8) | −0.2 (0.8) | 0.0 (0.9) | 0.5 (0.9) | 0.8 (0.8) | 1.1 (0.8) | |||||||
| LAZ | 1.3 (1.1) | 0.3 ( 1.2) | 0.0 (1.2) | 0.2 (1.2) | 0.2 (1.2) | 0.3 (1.1) | 0.4 (1.1) | |||||||
| WLZ | −1.1 (1.2) | −0.5 (1.2) | −0.2 (1.2) | −0.1 (1.1) | 0.6 (1.0) | 1.0 (0.9) | 1.2 (0.9) | |||||||
| Any breastfeeding | 100 | 91.3 | 77.9 | 64.9 | 41.8 | 28.8 | 21.3 | |||||||
| Exclusive breastfeeding | 100 | 54.3 | 36.9 | 26.8 | 4.0 | |||||||||
Abbreviations: LAZ, length-for-age z score; PROBIT, Promotion of Breastfeeding Intervention Trial; SD, standard deviation; WAZ, weight-for-age z score; WLZ, weight-for-length z score.
a
Sample sizes denote the numbers of infants with weight at the indicated age. Numbers of infants with other measurements may differ slightly.