Laura C . Maclagan

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STUDY QUESTION Do women who conceive without treatment after a long time to pregnancy (TTP) have an increased risk of preterm birth compared with women in the general obstetric population? SUMMARY ANSWER Based on this meta-analyses of 14 studies, women with a long TTP are at an increased risk of preterm birth: pooled crude odds ratio (OR): 1.38 (95% CI:(More)
BACKGROUND The Permanent Resident Database of Citizenship and Immigration Canada (CIC) contains sociodemographic information on immigrants but lacks ethnic group classifications. To enhance its usability for ethnicityrelated research, we categorized immigrants in the CIC database into one of Canada's official visible minority groups or a white category(More)
BACKGROUND Evidence from large, population-based studies about the association between neighbourhood walkability and the prevalence of obesity is limited. DATA AND METHODS The study population consisted of 106,337 people aged 20 or older living in urban and suburban Ontario, who participated in the National Population Health Survey and the Canadian(More)
OBJECTIVES To determine ethnic-specific temporal trends in cardiovascular risk factors in Ontario between 2001 and 2012. DESIGN A population-based repeated cross-sectional study. SETTING Ontario, Canada. PARTICIPANTS 219,276 participants of the Canadian Community Health Survey (205,326 white, 5620 South Asian, 4368 Chinese and 3962 black) during the(More)
BACKGROUND To comprehensively examine the cardiovascular health of Canadians, we developed the Cardiovascular Health in Ambulatory Care Research Team (CANHEART) health index. We analyzed trends in health behaviours and factors to monitor the cardiovascular health of the Canadian population. METHODS We used data from the Canadian Community Health Survey(More)
BACKGROUND The CArdiovascular HEalth in Ambulatory care Research Team (CANHEART) is conducting a unique, population-based observational research initiative aimed at measuring and improving cardiovascular health and the quality of ambulatory cardiovascular care provided in Ontario, Canada. A particular focus will be on identifying opportunities to improve(More)
BACKGROUND The impact of moving to a neighborhood more conducive to utilitarian walking on the risk of incident hypertension is uncertain. OBJECTIVE Our study aimed to examine the effect of moving to a highly walkable neighborhood on the risk of incident hypertension. METHODS A population-based propensity-score matched cohort study design was used based(More)
BACKGROUND -Immigrants from ethnic minority groups represent an increasing proportion of the population in many high-income countries but little is known about the causes and amount of variation between various immigrant groups in the incidence of major cardiovascular events. METHODS AND RESULTS -We conducted the Cardiovascular Health in Ambulatory Care(More)
BACKGROUND Variations in the prevalence of traditional cardiac risk factors only partially account for geographic variations in the incidence of cardiovascular disease. We examined the extent to which preventive ambulatory health care services contribute to geographic variations in cardiovascular event rates. METHODS We conducted a cohort study involving(More)
The proliferation of cardiac diagnostic tests over the past few decades has received substantial attention from policymakers. However, contemporary population-based temporal trends of the utilization of noninvasive cardiac diagnostic tests for coronary artery disease are not known. Our objective was to examine the temporal trends in the utilization of(More)