Study	Reason for exclusion
Chantry 2006	The group with full breastfeeding from 4 to < 6 months did not necessarily continue mixed (partial) breastfeeding to at least 6 months.
Chantry 2007	The group with full breastfeeding from 4 to < 6 months did not necessarily continue mixed (partial) breastfeeding to at least 6 months.
Evelein 2011	The group with exclusive breastfeeding from 3‐6 months did not necessarily continue mixed (partial) breastfeeding to at least 6 months.
Ly 2006	Both intervention and control groups were free to consume locally available complementary foods prior to 4 months and during the intervention period from 4 to 7 months.
Meinzen‐Derr 2006	The group with exclusive breastfeeding from 4‐6 months did not necessarily continue mixed (partial) breastfeeding to at least 6 months.
Rebhan 2009	The group with full/exclusive breastfeeding from 4‐6 months did not necessarily continue mixed (partial) breastfeeding to at least 6 months.
Wang 2005	Those infants in the control group (mixed breastfeeding at ages 4‐6 months) were not necessarily exclusively breastfed until 4 months.
Weyermann 2006	Comparing the 533 total (207+326) infants who were breastfed to any extent for at least 6 months with the 599 (277+322) who were exclusively breastfed for at least 3 months, it appears as if 66 (599‐533) of the 277 infants listed as exclusively breastfed for 3‐< 6 months discontinued breastfeeding before 6 months (see Table 1),