Variable

Ferrous sulfate (n = 145)

Iron polymaltose complex (n = 145)

t

df

p-value

Baseline ferritin (μg/l)

9.4 ± 1.2

9.5 ± 1.2

−0.644

288

0.520

Ferritin at 4 weeks (μg/l)

9.8 ± 1.2

9.9 ± 1.2

−0.956

288

0.340

Ferritin at 8 weeks (μg/l)

10.5 ± 1.5

10.6 ± 1.3

−0.529

288

0.597