Table 2 Different breastfeeding behaviors of the first child in different age groups
|  | 1930–1938 | 1939–1948 | 1949–1958 | 1959–1968 | 1969–1974 | Total |
|---|---|---|---|---|---|---|
Breastfeeding duration/months, (SD) | 15.4 (9.2) | 14.8 (8.2) | 14.7 (8.9) | 12.8 (7.2) | 13.1 (7.2) | 14.1 (8.2) |
Any breastfeeding, % | 94.9 | 95.6 | 95.6 | 94.9 | 95.4 | 95.3 |
Breastfeeding at 6 months, % | 91.2 | 92.0 | 91.8 | 89.4 | 89.2 | 90.9 |
Breastfeeding at 12 months, % | 81.3 | 78.9 | 74.1 | 65.3 | 65.0 | 72.2 |
Median of bf duration/ months | 12 | 12 | 12 | 12 | 12 | 12 |