Folate Intake and Markers of Folate Status in Women of Reproductive Age, Pregnant and Lactating Women: A Meta-Analysis

Table 1

Inclusion criteria followed to select potentially relevant papers for data extraction.

Population characteristics	Apparently healthy participants at baseline
Study design	Randomised controlled trial
Intervention	Supplements or fortified foods or natural diet intakes versus a placebo or untreated group
Duration	4 weeks
Outcomes	Must report the following relationships: 𝑖𝑛𝑡𝑎𝑘𝑒-𝑠𝑡𝑎𝑡𝑢𝑠
Intake measures	Report of intake from supplements or fortified foods or natural food sources
Status measurements	Red blood cell (RBC) folate; Plasma/serum folate; Homocysteine (tHcy)
Baseline information	Baseline data must be present for all reported outcomes