Please select the eligibility criteria that correspond to the clinical trial below.
Title: VITATOPS - A Study of VITAmins TO Prevent Stroke
Brief Summary: The VITATOPS study is a multi-center, randomized, double blind, placebo-controlled secondary stroke prevention trial to determine whether the addition of vitamin supplements (B12 500 ug, B6 25 mg, Folate 2 mg) to best medical/surgical management (including modification of risk factors) will reduce the combined incidence of recurrent vascular events (stroke, myocardial infarction) and vascular death in patients with recent stroke or transient ischemic attack (TIA). All patients presenting to one of the participating neurologists or general physicians within seven months of stroke (ischemic or hemorrhagic) or TIA (eye or brain) are eligible for this trial. Eligible patients will be randomized in a double-blind fashion to receive multi-vitamins or placebo, 1 tablet daily. The primary outcome event is the composite event "stroke, myocardial infarction, or death from any vascular cause", whichever occurs first. Our target is to recruit a total of 8,000 patients over the next two years with a median follow-up of 2.5 years. Recruitment to the trial began in November 1998 and is planned to continue until December 2005. We aim to complete final follow-up by the end of 2006. However, the Steering Committee will be flexible in dictating the need for ongoing recruitment and continuing follow-up, depending on the overall rate of the primary outcome event in the entire cohort at each interim analysis.


Options:
A: Inclusion Criteria:

* Patients presenting within seven months of stroke (ischemic or hemorrhagic) or TIA
* Agree to take study medication
* Be geographically accessible for follow-up
* Provide written informed consent

Exclusion Criteria:

* Taking folic acid or B6 on medical advice
* Use of vitamin supplements containing folate, B6 or B12 (unless patient agrees to take study medication instead of the vitamin supplements which they usually take)
* Taking Methotrexate for any reason
* Pregnancy or women of child-bearing potential who are at risk of pregnancy
* Limited life expectancy
B: Inclusion Criteria:

* Patients presenting within one months of ischemic stroke (ischemic or hemorrhagic) or TIA
* Homocysteine level ≥ 15μmol／L
* Agree to take study medication;Be geographically accessible for follow-up
* Provide written informed consent

Exclusion Criteria:

* Other cause of ischemic stroke (cardioembolism; stroke of other determined etiology, and stroke of undetermined etiology according to TOAST subtypes) or hemorrhagic stroke (intracranial vascular malformations; cerebral amyloid angiopathy; trauma and bleeding disorders etc)
* Use of vitamin supplements containing folate, B6 or B12
* Pregnancy or women of child-bearing potential who are at risk of pregnancy
* Limited life expectancy
C: Inclusion Criteria:

* women aged 35-60 years, men aged 45-60 years
* acceptance of the possibility to be given a placebo and acceptance of the constraints of participation
* lack of previous regular supplementation with any of the vitamins or minerals in the supplement provided
* absence of extreme beliefs or behavior regarding diet

Exclusion Criteria:

* disease likely to hinder active participation or threatened 5-year survival
D: Inclusion Criteria:

* \>/= 70 years old
* B12: 150 - 300 pmol/L
* Caregiver (personal contact at least once a week)

Exclusion Criteria:

* Dementia
* Peripheral neuropathy
* Anaemia (Hb\<10 g/dl)
* Renal failure (creatinine \> 150 µmol/L
* Stroke

Answer: A