Table 1.

Characteristics of randomized efficacy feeding trials of iron-biofortified crops

Setting	Manila, Philippines [12]	Maharashtra, India [13]	Huye, Rwanda [14]
Population	Adult female (18–45 years) religious sisters in nine convents	Male and female adolescents (12–16 years) living in three hostels	Adult female (18–27 years) university students
Study Design	Randomized efficacy trial	Randomized efficacy trial	Randomized efficacy trial
Randomization	By individual	By individual	By individual
Sample size	n = 192	n = 246	n = 195
Intervention	Iron-biofortified rice	Iron-biofortified pearl millet as Bhakri	Iron-biofortified beans
	High iron: n = 92 Control: n = 100	High iron: n = 122 Control: n = 124	High iron: n = 94 Control: n = 101
Length of feeding	9 months	6 months	4.5 months