Objective To explore the association between migraine and risk of ischaemic stroke. Design
Systematic review and meta-analysis. Data sources Observational studies published …

Objectives To quantify the risk of Alzheimer's disease in users of all non-steroidal anti-
inflammatory drugs (NSAIDs) and users of aspirin and to determine any influence of duration …

Purpose: To determine whether intake of tomato products reduces the risk of prostate cancer
using a meta-analysis. Methods: We systematically searched MEDLINE and EMBASE and …

Objective To determine the magnitude of risk of cardiovascular mortality in patients with
rheumatoid arthritis (RA) compared with the general population through a meta‐analysis of …

Objectives: The purpose of this study was to determine if statins (hydroxymethylglutaryl CoA
reductase inhibitors [HMG-CoA]), angiotensin-converting enzyme (ACE) inhibitors, and …

We studied the effect of vitamin C, vitamin E, and β carotene intake on the risk of Parkinson's
disease (PD). We did a systematic review and meta-analysis of observational studies …

Head trauma has been implicated in the etiopathogenesis of Parkinson's disease (PD). We
performed a meta‐analysis to investigate the association between head trauma and the risk …

Background: Older adults throughout the developed world are at significant risk of
osteoporotic fractures. Many studies have examined the relationship between the use of …

Many exposures of epidemiological interest are time varying, and the values of potential
confounders may change over time leading to time varying confounding. The aim of many …

Background Breast cancer is one of the leading causes of mortality among women. The use
of nonsteroidal anti-inflammatory drugs (NSAIDs) may be associated with reduced risk for …