Background: Although many time-series studies of ozone and mortality have identified positive associations, others have yielded null or inconclusive results, making the results of these studies difficult to interpret. Methods: We performed a meta-analysis of 144 effect estimates from 39 time-seri...

Objective To obtain the exposure-response functions that could be used in health-based risk assessment of particulate air pollution in China. Methods Meta analysis was conducted on the literatures on air particulate matter and its adverse health outcomes in China and worldwide. Results For each h...

Background: There is ample evidence that short-term ozone exposure is associated with transient decrements in lung functions and increased respiratory symptoms, but the short-term mortality effect of such exposures has not been established. Methods: We conducted a review and meta-analysis of shor...

Background: Results from time-series epidemiologic studies evaluating the relationship between ambient ozone concentrations and premature mortality vary in their conclusions about the magnitude of this relationship, if any, making it difficult to estimate public health benefits of air pollution c...

Objective: To compare the efficacy of aerobic walking and home based quadriceps strengthening exercises in patients with knee osteoarthritis. Methods: The Medline, Pubmed, EMBASE, CINAHL, and PEDro databases and the Cochrane controlled trials register were searched for randomised controlled trial...

Objective: Use the meta-analytic approach to examine the effects of aerobic exercise on lipids and lipoproteins in overweight and obese adults. Data sources: (1) Computerized literature searches, (2) cross-referencing from review and original articles, (3) hand searching, and (4) expert review...

Background: Although physical fitness has been suggested to improve physical and psychosocial health for a variety of population profiles, there is a lack of information about the safety and effectiveness of aerobic exercise for adults with Down syndrome. Objectives: To evaluate the effectiven...

This systematic review investigated the effects on function, quality of life, health care costs, and patient/carer satisfaction of constraint-induced movement therapy (CIMT) for upper limb hemiparesis following stroke. A comprehensive search of the complete holdings of MEDLINE, CINAHL, EMBASE, Co...

Objective: Several studies have evaluated the relationship between physical activity and lung cancer. To summarize and review these studies, we conducted a meta-analysis of all relevant reports published from 1966 through October 2003. Method: Adjusted odds ratios (ORs) from the original studi...

An elevated level of non-high-density lipoprotein cholesterol (non-HDL-C) is a major risk factor for cardiovascular disease. The purpose of this study was to use the meta-analytic approach to examine the effects of walking on non-HDL-C in adults. Twenty-two randomized controlled trials represen...