Articles on case control study

A case-control study of pancreatic cancer and cigarettes ...

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Abstract. A pancreatic cancer case-control study was conducted in the Minneapolis-St. Paul area. Family members were interviewed about the subject's usage of cigarettes, alcohol, coffee, and other dietary factors in the two years prior to death (cases, n = 212) or prior to interview (controls, n = 220).

A case-control study of pancreatic cancer and cigarettes ...

Case–Control Study of Human Papillomavirus and ...

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A case-control study is designed to help determine if an exposure is associated with an outcome (i.e., disease or condition of interest). In theory, the case-control study can be described simply. First, identify the cases (a group known to have the outcome) and the controls (a group known to be ...

Case–Control Study of Human Papillomavirus and ...

Epidemiology in Practice: Case-Control Studies

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Case-control studies also are used for diseases that have long latent periods (long durations between exposure and disease manifestation) and are ideal when multiple potential risk factors are at play. The primary challenge in designing a case-control study is the appropriate selection of cases and controls.

Epidemiology in Practice: Case-Control Studies

Case-control study | epidemiology | Britannica.com

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Case–control studies are therefore placed low in the hierarchy of evidence. Examples. One of the most significant triumphs of the case–control study was the demonstration of the link between tobacco smoking and lung cancer, by Richard Doll and Bradford Hill.

Case-control study | epidemiology | Britannica.com

Case–control study - Wikipedia

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5/26/2004 · I think it does. The standard index of risk calculated from case-control studies is the odds ratio (OR), whilst that from a cohort study is the relative risk (RR). Using incidence-density sampling in a case-control study is becoming more common, and makes it …

Case–control study - Wikipedia

What is a case-control study? | International Journal of ...

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PP11 Association between atopic disorders and childhood type 1 diabetes: A population-based case control study in the Middle East. A Memon, S Polack, M Al-Khawari, M Qabazard, A Al-Adsani, M Abdul-Rasoul, R Gulati, A Shaltout, A Suresh. J Epidemiol Community Health Sep 2014, 68 (Suppl 1) A51; DOI: 10.1136/jech-2014-204726.108 .

What is a case-control study? | International Journal of ...

Case-control studies | Journal of Epidemiology & Community ...

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Case-control studies. The same problem could also be studied in a case-control study. A case-control study begins with the selection of cases (people with a disease) and controls (people without the disease). The controls should represent people who would have been study cases if they had developed the disease (population at risk).

Case-control studies | Journal of Epidemiology & Community ...

Cohort and Case-Control Studies: Pro's and Con's - The ...

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9/1/2004 · Epidemiologic studies have suggested that some dietary factors may play a role in the etiology of ovarian cancer, but the findings have been inconsistent. We assessed the association of ovarian cancer with dietary factors in a population-based case-control study in Canada. Diet information was collected on 442 incident cases of ovarian cancer diagnosed in 1994 to 1997 and 2,135 population ...

Cohort and Case-Control Studies: Pro's and Con's - The ...

Case–control studies: basic concepts | International ...

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In this large case–control study in India, the prevalence of smoking was about 5% among women and 37% among men between the ages of 30 and 69 years. Smoking was associated with increased ...

Case–control studies: basic concepts | International ...

A Case-Control Study of Diet and the Risk of Ovarian ...

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2/1/2008 · The aim of the present study was to determine the risk of lung cancer associated with cannabis smoking. A case–control study of lung cancer in adults ≤55 yrs of age was conducted in eight district health boards in New Zealand. Cases were identified from the New Zealand Cancer Registry and hospital databases. Controls were randomly selected from the electoral roll, with frequency matching ...

A Case-Control Study of Diet and the Risk of Ovarian ...

Chapter 8. Case-control and cross sectional studies | The BMJ

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This multicentre case-control study across ten European and one Brazilian site replicates the strong effect of daily use of high-potency cannabis on the odds for psychotic disorder in the whole sample—which, to our knowledge, is the largest to date to address this question. This effect was particularly visible in London and Amsterdam.

Chapter 8. Case-control and cross sectional studies | The BMJ

A Nationally Representative Case–Control Study of Smoking ...

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5/16/2018 · A case-control study, like other medical research, can help scientists find new medications and treatments. Find out how 'cases' are compared with 'controls' in this type of study. This type of ...

A Nationally Representative Case–Control Study of Smoking ...

Cannabis use and risk of lung cancer: a case–control study ...

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1/3/2014 · Researchers investigated the risk factors associated with the development of pulmonary tuberculosis in Russia. A case-control study was performed in the city of Samara, 700 miles south east of Moscow. Cases were 334 consecutive adults diagnosed as having culture confirmed pulmonary tuberculosis at any of the city’s specialist tuberculosis clinics between 1 January 2003 and 31 …

Cannabis use and risk of lung cancer: a case–control study ...

The contribution of cannabis use to variation in the ...

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Description of a Case-Control Study A study design where the investigator identifies and selects patients who have the endpoint or outcome of interest (i.e., "cases") and also patients without the endpoint or outcome of interest (i.e., "controls") and looks back in time to identify exposures or characteristics that are linked to the cases.

The contribution of cannabis use to variation in the ...

Case-control study in medical research: Uses and limitations

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1/10/2017 · In high-income countries, the incidence of severe postpartum hemorrhage (PPH) has increased. This has important public health relevance because severe PPH is a leading cause of major maternal morbidity. However, few studies have identified risk factors for severe PPH within a contemporary obstetric cohort. We performed a case-control study to identify risk factors for severe …

Case-control study in medical research: Uses and limitations

Case-control studies: advantages and disadvantages | The BMJ

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8/7/2014 · Methods. Using the Finnish Job Exposure Matrix and the occupational history of 1,436 cases and 1,349 matched controls from an Australian case control study; we investigated five related exposure variables considered to be risk factors by comparing odds ratios.

Case-control studies: advantages and disadvantages | The BMJ

Case-Control Study: Biostatistics Overview

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1/4/2013 · Objective Considering that epidemiological studies show that suicide rates in many countries are highest in the spring when vitamin D status is lowest, and that low vitamin D status can affect brain function, we sought to evaluate if a low level of 25-hydroxyvitamin D [25(OH)D] could be a predisposing factor for suicide. Method We conducted a prospective, nested, case-control study using serum ...

Case-Control Study: Biostatistics Overview

Risk factors for severe postpartum hemorrhage: a case ...

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Background. Vietnam has a low age-standardized incidence of breast cancer, but the incidence is rising rapidly with economic development. We report data from a matched case-control study of risk factors for breast cancer in the largest cancer hospital in Vietnam. Methods. 492 incident breast cancer cases unselected for family history or age at diagnosis and 1306 control women age 25–75 ...

Risk factors for severe postpartum hemorrhage: a case ...

A case control study investigating ... - Environmental Health

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3/10/2008 · What happened to little, red-haired Hannah Poling is hardly unique in the world of autism. She had an uneventful birth; she seemed to be developing normally — smiling, babbling, engaging in imaginative play, speaking about 20 words by 19 months. And …

A case control study investigating ... - Environmental Health

Low Vitamin D Status and Suicide: A Case-Control Study of ...

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8/1/2015 · BACKGROUND AND OBJECTIVE: Recent evidence has linked childhood antibiotic use and microbiome disturbance to autoimmune conditions. This study tested the hypothesis that antibiotic exposure was associated with newly diagnosed juvenile idiopathic arthritis (JIA). METHODS: We performed a nested case–control study in a population-representative medical records database from …

Low Vitamin D Status and Suicide: A Case-Control Study of ...

A Matched Case-Control Study of Risk Factors for Breast ...

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4/30/2014 · This study is nested within a larger case-control psychological autopsy study (not yet published) that examined factors associated with the initiation of youth suicide clusters. In the larger study, we attempted to interview at least one parent or guardian and a peer or sibling for each cluster and non-cluster suicide, and obtain official ...

A Matched Case-Control Study of Risk Factors for Breast ...

Case Study: Autism and Vaccines - TIME

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4/2/2019 · Level IV: Evidence from well-designed case-control and cohort studies Level V: Evidence from systematic reviews of descriptive and qualitative studies Level VI: Evidence from a single descriptive or qualitative study Level VII: Evidence from the opinion of authorities and/or reports of expert committees

Case Study: Autism and Vaccines - TIME

Antibiotic Exposure and Juvenile Idiopathic Arthritis: A ...

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6/17/2014 · Case-control studies. Using the NOS, one study was assessed as having low risk of bias , and four as having moderate risk , , , . All case-control studies had good methodology for case and control selection, as well as comparability, however, adequate description of non-response rate was a recurring problem. 3.4. Outcomes

Antibiotic Exposure and Juvenile Idiopathic Arthritis: A ...

Newspaper coverage of suicide and initiation of suicide ...

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1/1/2003 · Cohort, cross sectional, and case-control studies are collectively referred to as observational studies. Often these studies are the only practicable method of studying various problems, for example, studies of aetiology, instances where a randomised controlled trial might be unethical, or if the condition to be studied is rare. Cohort studies are used to study incidence, causes, and prognosis.

Newspaper coverage of suicide and initiation of suicide ...

Cohort study: Finding causes, examples, and limitations

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They can determine if there is an associational relationship between condition and risk factorExample: A study in which colon cancer patients are asked what kinds of food they have eaten in the past and the answers are compared with a selected control group.Case control studies are less reliable than either randomized controlled trials or ...

Cohort study: Finding causes, examples, and limitations

Levels of Evidence (I-VII) - Nursing Resources - LibGuides ...

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Research Articles on the Case Study Method: An Annotated Bibliography ... 2010 This annotated bibliography of research articles on the case method (including problem-based learning) was begun under an NSF CCLI National Dissemination Grant awarded to Clyde F. ... students participated in the study. Students in the control group completed the ...

Levels of Evidence (I-VII) - Nursing Resources - LibGuides ...

Vaccines are not associated with autism: An evidence-based ...

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2/15/2001 · An association between mumps-measles-rubella (MMR) vaccination and the onset of symptoms typical of autism has recently been suggested. This has led to considerable concern about the safety of the vaccine. A matched case-control study using data derived form the United Kingdom General Practice Research Database. Children with a possible diagnosis of autism will be identified from their ...

Vaccines are not associated with autism: An evidence-based ...

Observational research methods. Research design II: cohort ...

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9/24/2006 · The case-control study design is often used in the study of rare diseases or as a preliminary study where little is known about the association between the risk factor and disease of interest.

Observational research methods. Research design II: cohort ...

Understanding Research Study Designs | Health Sciences ...

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8/8/2014 · The massive deployment of life saving malaria interventions has not only resulted in a decline in disease burden but a change in the risk of infection and disease. The study reassesses the importance of known risk factors and reviews demographic and socio-economic determinants of malaria risk in the population. This was a case-control study involving 150 children with test-confirmed malaria ...

Understanding Research Study Designs | Health Sciences ...

Research Articles on the Case Method - Case study

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In medicine, levels of evidence (LoE) are arranged in a ranking system used in evidence-based practices to describe the strength of the results measured in a clinical trial or research study. The design of the study (such as a case report for an individual patient or a double-blinded randomized controlled trial) and the endpoints measured (such as survival or quality of life) affect the ...

Research Articles on the Case Method - Case study

A case-control study of autism and mumps-measles-rubella ...

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A case-control study was conducted to investigate if exposure to zinc oxide is a more effective skin cancer prevention measure. The study involved comparing a group of former lifeguards that had developed cancer on their cheeks and noses (cases) to a group of lifeguards without this type of cancer (controls) and assess their prior exposure to ...

A case-control study of autism and mumps-measles-rubella ...

Study design V. Case–control studies | Evidence-Based ...

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7/4/2014 · Case Control Study Cases Control Retrospective studies Fast and inexpensive Recall and Selection Bias Causation difficult to established Useful in rare disea...

Study design V. Case–control studies | Evidence-Based ...

A comparative case control study of the ... - Malaria Journal

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The current hospital based case-control study was undertaken with aim, to identify the risk factors for stroke. Material and Method: Study was carried out in BLDEU’s Shri B M Patil Medical College, Hospital & Research Centre. A prospective case-control, age and …

A comparative case control study of the ... - Malaria Journal

Levels of evidence - Wikipedia

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2/8/2018 · The aim was study impacts of drinking water fluoride on T3, T4 and TSH hormones inYGA (Yazd Greater Area). In this case- control study 198 cases and 213 controls were selected. Fluoride was ...

Levels of evidence - Wikipedia

Case Control - Study Design 101 - himmelfarb.gwu.edu

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11/11/2010 · Data used for this retrospective case/control study collected during 2008/2009 academic school year included 4169 adolescents between ages 12 and 19 (Case Group: n = 2124); Control Group: n = 2045). Inclusion criteria for participation in the health …

Case Control - Study Design 101 - himmelfarb.gwu.edu

"Case Control Study"........ In 10 Mintues !!!! - YouTube

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3D Printing at Himmelfarb Off Campus Access Study Room Reservations Systematic Review Service Borrow From Other Libraries (ILL) ... Case Management Questions and Answers / Devra Becker. ... Himmelfarb Health Sciences Library. 2300 Eye St., NW, Washington, DC 20037 Reference: (202) 994-2850 | Circulation: ...

RISK FACTORS FOR STROKE : A CASE CONTROL STUDY - …

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Developed by industrial statisticians using proven methodologies for quality analysis and control, InfinityQS solutions are saving leading manufacturers millions of dollars each year. Statistical Process Control (SPC) is an industry-standard methodology for measuring and controlling quality during the manufacturing process.

RISK FACTORS FOR STROKE : A CASE CONTROL STUDY - …

Impact of Drinking Water Fluoride on Human Thyroid ...

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11/29/2010 · The case study approach allows in-depth, multi-faceted explorations of complex issues in their real-life settings. The value of the case study approach is well recognised in the fields of business, law and policy, but somewhat less so in health services research. Based on our experiences of conducting several health-related case studies, we reflect on the different types of case study design ...

Impact of Drinking Water Fluoride on Human Thyroid ...

A case-control study of determinants for high and low ...

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7/21/2008 · Despite its benefits, it is uncommon to apply the nested case-control design in diagnostic research. We aim to show advantages of this design for diagnostic accuracy studies. We used data from a full cross-sectional diagnostic study comprising a cohort of 1295 consecutive patients who were selected on their suspicion of having deep vein thrombosis (DVT).

A case-control study of determinants for high and low ...

Himmelfarb Health Sciences Library

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Case Control Studies in CVD Epidemiology. As Oppenheimer has discussed in his historical background of CVD epidemiology, the field emerged with almost exclusive use of prospective designs for observational studies of risk, in contrast to the case-control approach that dominated the origins of cancer epidemiology (Oppenheimer 2006).

Himmelfarb Health Sciences Library

The Cost of Poor Quality Control - Case Studies | InfinityQS

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4/6/2019 · Methods. We estimated pertussis vaccine effectiveness (VE) through a case-control study of 1335 cases statutorily reported to public health in Ontario and occurring between January 1, 2009 and March 31, 2015, compared with 5340 randomly selected population controls, frequency-matched by age, primary-care provider and year of diagnosis.

The Cost of Poor Quality Control - Case Studies | InfinityQS

The case study approach | BMC Medical Research Methodology ...

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8/8/2005 · The association between intake of non-phenacetin-containing analgesics and the occurrence of chronic renal failure is still controversially discussed. A new epidemiologic study was planned and conducted in Germany and Austria. The objective of the international, multicenter case-control study was to evaluate the association between end-stage renal disease (ESRD) and use of non-phenacetin ...

The case study approach | BMC Medical Research Methodology ...

Advantages of the nested case-control design in diagnostic ...

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3/7/2018 · This case-control study is the first exploration of the association between nut consumption and risk of colorectal cancer in the Korean population, where nut consumption frequency and patterns may differ compared with other countries. A number of potential limitations may influence the present study.

Advantages of the nested case-control design in diagnostic ...
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