Weeks of any and exclusive breastfeeding by level of family income. Values are in Hong Kong Dollars (1 USD = 7.78 HKD). Participants lost-to-follow-up (n = 33) and those with missing income data (n = 35) were excluded. The sample size for this analysis was 1249.
Tarrant et al. BMC Pregnancy and Childbirth 2010 10:27 doi:10.1186/1471-2393-10-27