. 2022 May 5;14(9):1938. doi: 10.3390/nu14091938

Table 3.

Relative ferritin concentration (µg/L) at endline compared to placebo in studies with factorial design: both zinc plus iron compared to iron, and zinc compared to placebo ¹.

Intervention Group	Zinc + Iron	Iron	Zinc	Placebo
Study:
Baqui [29]	8.0 ^a	3.7 ^a	6.4 ^a	0 ^a
Berger [50]	35.8 ^b	41.5 ^b	0 ^a	0 ^a
Dijkhuizen [52]	12.3 ^b	22.5 ^b	−2.3 ^a	0 ^a
Lind [21] ²	18.4 ^b	32.6 ^c	−0.6 ^a	0 ^a
Rosado 1997 [55]	20.7	24.0	−3.2	0 ^a
Rosado 2006 [38]	25.2 ^b	37.4 ^b	−2.1 ^a	0 ^a
Wasantwisut [58]	26.5 ^b	45.4 ^c	0.2 ^a	0 ^a
Weiringa [59]	16.5 ^b	23.0 ^b	−4.2 ^a	0 ^a

¹ Values are mean or median endline ferritin concentration (or change in concentration from baseline) for each intervention group, less the mean endline concentration in the placebo group. ² Placebo concentration reported in Lind 2003 publication updated by Dr. Lind (personal communication). ^a,b,c Values in a row with no similar letter in superscript are significantly different; Rosado ‘97 only reported differences from baseline. Original to this manuscript.