Graham C. Mecredy

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INTRODUCTION Few studies have examined the transitions of smokers in the general population through multiple periods of daily, occasional smoking, or abstinence over time. Transitions from daily to occasional smoking are particularly of interest as these may be steps toward cessation. METHODS The Ontario Tobacco Survey panel study followed 4,355 baseline(More)
BACKGROUND Young adulthood has been shown to be a time of increased substance use. Yet, not enough is known about which factors contribute to initiation and progression of substance use among young adults specifically during the transition year away from high school. OBJECTIVES A narrative review was undertaken to increase understanding of the predictors(More)
BACKGROUND The influence of the built environment on health is of contemporary societal interest. The design of streets in neighbourhood settings may contribute positively to the health of populations through increased physical activity, but it may also have injury consequences. METHODS We conducted a national cross-sectional study to describe the injury(More)
BACKGROUND Availability of tobacco may be associated with increased smoking. Little is known about how proximity to a retail outlet is associated with smoking behaviours among smokers seeking treatment. METHODS A cross sectional study was conducted using chart data was extracted for 734 new clients of a nicotine dependence clinic in Toronto, Canada who(More)
Interest has been increasing in regulating the location and number of tobacco vendors as part of a comprehensive tobacco control program. The objective of this paper is to examine the distribution of tobacco outlets in a large jurisdiction, to assess: (1) whether tobacco outlets are more likely to be located in vulnerable areas; and (2) what proportion of(More)
Chronic obstructive pulmonary disease (COPD) has been associated with many types of comorbidity. We aimed to quantify the real world impact of COPD on lower respiratory tract infection, cardiovascular disease, diabetes, psychiatric disease, musculoskeletal disease and cancer, and their impact on COPD through health services. A population study using health(More)
Street connectivity, defined as how well streets connect to one and other and the density of intersections, is positively associated with active transportation in adults. Our objective was to study the relation between street connectivity and physical activity in youth. Study participants consisted of 8,535 students in grades 6-10 from 180 schools across(More)
OBJECTIVES Tobacco use co-morbidities, including co-occurring tobacco use, substance use and mental health problems, are a serious public health issue that has implications for treatment and policy. However, not enough is known about the prevalence of various types of tobacco use co-morbidities among the Canadian population. The purpose of this study was to(More)
BACKGROUND High tobacco prices, typically achieved through taxation, are an evidence-based strategy to reduce tobacco use. However, the presence of inexpensive contraband tobacco could undermine this effective intervention by providing an accessible alternative to quitting. We assessed whether the use of contraband tobacco negatively affects smoking(More)
Tobacco price increases, such as through taxation, are an effective strategy to reduce smoking prevalence, however this strategy is undermined by both discount and contraband tobacco.1 The discount cigarette market has grown substantially since 2003, with discount cigarettes selling for approximately $10-15 less per carton than premium brands.2 The illegal(More)