Table 1.
Breastfeeding rates (%) at four months from cohort studies, P.R. China
| Study details | Months of age | Exclusive breastfeeding | 95%CI | Any breastfeeding | 95%CI | ||
| Beijing [33] n = 100 Survey year: 1997 |
1 | 54.0 | 44.2 | 63.8 | 84.0 | 76.8 | 91.2 |
| 2 | 46.0 | 36.2 | 55.8 | 80.0 | 72.2 | 87.8 | |
| 3 | 37.0 | 27.5 | 46.5 | 77.0 | 68.8 | 85.2 | |
| 4 | 37.0 | 27.5 | 46.5 | 76.0 | 67.6 | 84.4 | |
| Chongqing [34] n = 627 Survey year: 1999. |
0b | 80.5 | 77.4 | 83.6 | 93.5 | 91.6 | 95.4 |
| 1 | 64.3 | 60.5 | 68.1 | 83.3 | 80.4 | 86.2 | |
| 2 | 52.3 | 48.4 | 56.2 | 71.6 | 68.1 | 75.1 | |
| 3 | 46.6 | 42.7 | 50.5 | 63.6 | 59.8 | 67.4 | |
| 4 | 42.9 | 39.0 | 46.8 | 59.2 | 55.4 | 63.0 | |
| Wuhana [35,36] n = 520 Survey year: 1994–1997. |
0 | 89.2 | 86.5 | 91.9 | 97.7 | 96.4 | 99.0 |
| 1 | 82.3 | 79.0 | 85.6 | 93.7 | 91.6 | 95.8 | |
| 2 | 70.6 | 66.7 | 74.5 | 87.4 | 84.5 | 90.3 | |
| 3 | 65.0 | 60.9 | 69.1 | 85.8 | 82.8 | 88.8 | |
| 4 | 55.6 | 51.3 | 59.9 | 84.0 | 80.8 | 87.2 | |
| Nanjing [37] n = 699 Survey year: 1995–1996 |
0 | 76.1 | 72.9 | 79.3 | 96.4 | 95.0 | 97.8 |
| 1 | 65.5 | 61.8 | 69.2 | 94.2 | 92.4 | 96.0 | |
| 2 | 64.4 | 60.6 | 68.2 | 92.6 | 90.5 | 94.7 | |
| 3 | 65.9 | 61.7 | 70.1 | 90.4 | 87.8 | 93.0 | |
| 4 | 60.6 | 56.1 | 65.1 | 87.0 | 83.9 | 90.1 | |
| Nanning [38] n = 250 Survey year: 1995–1996 |
0 | 94.4 | 91.5 | 97.3 | 100 | 100.0 | 100.0 |
| 1 | 91.2 | 87.7 | 94.7 | 100 | 100.0 | 100.0 | |
| 2 | 78.4 | 73.3 | 83.5 | 95.6 | 93.1 | 98.1 | |
| 3 | 60.8 | 54.7 | 66.9 | 93.2 | 90.1 | 96.3 | |
| 4 | 50.4 | 44.2 | 56.6 | 87.6 | 83.5 | 91.7 | |
| Guangzhou [39] n = 1323 Survey year: 1998–1999 |
0 | 94.0 | 92.7 | 95.2 | 96.4 | 95.4 | 97.4 |
| 1 | 90.5 | 88.9 | 92.1 | 95.7 | 94.6 | 96.8 | |
| 2 | 83.3 | 81.3 | 85.3 | 93.9 | 92.6 | 95.2 | |
| 3 | 75.7 | 73.4 | 78.0 | 93.2 | 91.8 | 94.6 | |
| 4 | 56.6 | 53.9 | 59.3 | 92.8 | 91.4 | 94.2 | |
| Total | 80.0 | 77.8 | 82.2 | 94.4 | 93.2 | 95.6 | |
| Shenzhen [40] n = 505 Survey year: 1997. |
1 | 66.5 | 62.4 | 70.6 | 76.8 | 73.1 | 80.5 |
| 2 | 65.7 | 61.6 | 69.8 | 74.7 | 70.9 | 78.5 | |
| 3 | 62.0 | 57.8 | 66.2 | 71.5 | 67.6 | 75.4 | |
| 4 | 56.0 | 51.7 | 60.3 | 65.4 | 61.3 | 69.5 | |
| Zhuhaic [25] n = 148 Survey year: 1995 |
0 | 97.3 | 94.7 | 99.9 | 98.6 | 96.7 | 100.5 |
| 1 | 88.5 | 83.4 | 93.6 | 95.9 | 92.7 | 99.1 | |
| 2 | 81.6 | 75.4 | 87.8 | 95.3 | 91.9 | 98.7 | |
| 3 | 75.0 | 68.0 | 82.0 | 92.1 | 87.8 | 96.4 | |
| 4 | 70.9 | 63.6 | 78.2 | 92.1 | 87.8 | 96.4 | |
| Qiqihar [41] n = 66 Survey year: 2002. |
1 | 63.6 | 52.0 | 75.2 | 72.7 | 62.0 | 83.4 |
| 2 | 42.4 | 30.5 | 54.3 | 66.7 | 55.3 | 78.1 | |
| 3 | 31.8 | 20.6 | 43.0 | 56.1 | 44.1 | 68.1 | |
| 4 | 27.3 | 16.6 | 38.0 | 53.0 | 41.0 | 65.0 | |
| Shunde [42] n = 660 Survey year: 2000. |
1 | 78.5 | 75.4 | 81.6 | 92.4 | 90.4 | 94.4 |
| 3 | 69.1 | 65.6 | 72.6 | 86.7 | 84.1 | 89.3 | |
| 4 | 62.0 | 58.3 | 65.7 | 83.3 | 80.5 | 86.1 | |
| Luzhou [43] n = 203 Survey year: 2002 |
1 | 89.6 | 85.4 | 93.8 | 97.5 | 95.4 | 99.6 |
| 2 | 87.7 | 83.2 | 92.2 | 97.1 | 94.8 | 99.4 | |
| 3 | 83.7 | 78.6 | 88.8 | 93.1 | 89.6 | 96.6 | |
| 4 | 79.8 | 74.3 | 85.3 | 90.1 | 86.0 | 94.2 | |
| Duan [44] n = 186 Survey year: 1997–1998. |
0 | 94.1 | 90.7 | 97.5 | 100 | 100.0 | 100.0 |
| 1 | 79.6 | 73.8 | 85.4 | 98.4 | 96.6 | 100.2 | |
| 2 | 60.8 | 53.8 | 67.8 | 94.1 | 90.7 | 97.5 | |
| 4 | 40.9 | 33.8 | 48.0 | 91.9 | 88.0 | 95.8 | |
| Chenyang [45] n = 149 Survey year: 2000. |
1 | 92.6 | 88.4 | 96.8 | 98.7 | 96.9 | 100.5 |
| 2 | 85.2 | 79.5 | 90.9 | 98.7 | 96.9 | 100.5 | |
| 3 | 80.5 | 74.1 | 86.9 | 98.0 | 95.8 | 100.2 | |
| 4 | 71.8 | 64.6 | 79.0 | 96.6 | 93.7 | 99.5 | |
| Shengzhou [46] n = 128 Survey year: 1997–1998. |
0 | 96.9 | 93.9 | 99.9 | 100.0 | 100.0 | 100.0 |
| 1 | 93.8 | 89.6 | 98.0 | 100.0 | 100.0 | 100.0 | |
| 2 | 84.4 | 78.1 | 90.7 | 96.9 | 93.9 | 99.9 | |
| 3 | 78.1 | 70.9 | 85.3 | 95.3 | 91.6 | 99.0 | |
| 4 | 76.6 | 69.3 | 83.9 | 91.4 | 86.5 | 96.3 | |
| Xinjiang [47] n = 578 Survey year: 2003–2004. |
0 | 78.0 | 74.6 | 81.4 | 88.5 | 85.9 | 91.1 |
| 1 | 33.9 | 29.9 | 37.9 | 85.6 | 82.6 | 88.6 | |
| 2 | 29.4 | 25.5 | 33.3 | 84.5 | 81.4 | 87.6 | |
| 3 | 24.0 | 20.3 | 27.7 | 83.1 | 79.9 | 86.3 | |
| 4 | 10.9 | 8.2 | 13.6 | 82.0 | 78.6 | 85.4 | |
a: The data of Wuhan city were from two sources.
b: 0 month refers to the period before discharge from hospital, generally in one week after delivery or 0.5 month of age.
c. 'Exclusive breastfeeding' include 'full breastfeeding'
Chongqing: a large city (municipality directly under the Central Government), in Southwest China.
Wuhan, a large city (municipality directly under the Central Government), in Central China.
Nanjing, the capital city of Jangsu province, East China.
Nanning, the capital city of Guangxi province, South China.
Guangzhou, the capital city of Guangdong province, South East China.
Shenzhen, a medium-sized city in Guangdong province, Southeast China.
Zhuhai, a medium-sized city in Guangdong province, Southeast China.
Qiqihar: a medium-sized city in Heilongjiang province, Northeast China.
Shunde: a medium-sized city in Guangdong Province, Southeast China.
Luzhou: a medium-sized city in Cichuan Province, Southwest China.
Duan, a county town, Guangxi province, South China.
Chenyang, a small town in Jiangsu province, East China.
Shengzhou, a small city in Zhejiang province, East China.
Xinjiang(Han Chinese), Uygur Autonomous Region, West China.