Table 1. Volume of Vitamin B12 Laboratory Tests in Ontario for Fiscal Years 2005/2006 to 2010/2011 |
Table 2. Summary of Laboratory Tests to Assess Vitamin B12 Deficiency |
Table 3. Guidelines for Assessment of Vitamin B12 Levels |
Table 4. Body of Evidence Examined According to Study Design |
Table 5. Summary of Systematic Reviews Examining the Association Between Vitamin B12 (or Hyperhomocysteinemia) and the Onset of Dementia |
Table 6. Studies Included in Highest-Scoring Systematic Reviews, Sorted by Length of Observation Period |
Table 7. Studies Included in Systematic Reviews of the Effectiveness of Vitamin B12 on Cognitive Function |
Table 8. Randomized Controlled Trials Comparing Oral Vitamin B12 to Intramuscular Vitamin B12 in Patients with Vitamin B12 Deficiency |
Table A1. Systematic Reviews of Treatment with B12 for Cognitive Function |
Table A2. GRADE Evidence Profile for the Association Between Homocysteine and the Onset of Dementia |
Table A3. Risk of Bias Among Observational Trials for the Association Between Homocysteine and the Onset of Dementia |
Table A4. GRADE Evidence Profile for Comparison of B Vitamins Versus Placebo |
Table A5. Risk of Bias Among Randomized Controlled Trials for Comparison of B Vitamins Versus Placebo |
Table A6. GRADE Evidence Profile for Comparison of Oral Vitamin B12 and Parenteral Vitamin B12 |
Table A7. Risk of Bias Among Randomized Controlled Trials for Comparison of Oral Vitamin B12 and Parenteral Vitamin B12 |