1. Effect of Folic Acid, with or without Other B Vitamins, on Cognitive Decline: Meta- Analysis of Randomized Trials 
David S. Wald, MA, MRCP, MD, Anuradhani Kasturiratne, MD, Mark Simmonds, PhD 
The American Journal of Medicine 
Volume 123, Issue 6, Pages e2 (June 2010)
DOI: /j.amjmed
Copyright © 2010 Elsevier Inc. Terms and Conditions

2. Figure 1
Standardized mean differences in cognitive function test scores (and 95% confidence intervals) between folic acid, with or without other B vitamins, and placebo groups for all tests within each randomized trial and pooled effect across all trials. CI=confidence interval; SMD=standardized mean difference.
The American Journal of Medicine  , e2DOI: ( /j.amjmed )
Copyright © 2010 Elsevier Inc. Terms and Conditions

3. Figure 2
Standardized mean differences in cognitive function test scores (and 95% confidence intervals) between folic acid, with or without other B vitamins, and placebo groups according to category of cognitive function (each square represents 1 scored task within a cognitive function test for a randomized trial).
The American Journal of Medicine  , e2DOI: ( /j.amjmed )
Copyright © 2010 Elsevier Inc. Terms and Conditions

4. Figure 3
Standardized mean differences and 95% confidence intervals in subgroups of randomized trials according to mean age of participants, treatment received, folic acid dose, and duration of treatment. CI=confidence interval; SMD=standardized mean difference.
The American Journal of Medicine  , e2DOI: ( /j.amjmed )
Copyright © 2010 Elsevier Inc. Terms and Conditions