Results 331 to 340 of about 22,838,112 (390)
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The Journal of Periodontology, 2018
BACKGROUND Growing evidence suggests that oxidative stress forms a key component in the etiopathogenesis of periodontitis. Studies have shown potential antioxidants responsible for combating the pro-oxidants which stress the periodontium.
Asha Ramesh +3 more
semanticscholar +1 more source
BACKGROUND Growing evidence suggests that oxidative stress forms a key component in the etiopathogenesis of periodontitis. Studies have shown potential antioxidants responsible for combating the pro-oxidants which stress the periodontium.
Asha Ramesh +3 more
semanticscholar +1 more source
2009
The case-control design is very suitable when dealing with rare diseases and when many factors for the disease under study need to be evaluated, as is the case in determining the risk of driving under the influence of drugs. However, the methodology is hard to implement and there are many sources of potential bias that could affect the validity of the ...
Houwing, S. +2 more
openaire +3 more sources
The case-control design is very suitable when dealing with rare diseases and when many factors for the disease under study need to be evaluated, as is the case in determining the risk of driving under the influence of drugs. However, the methodology is hard to implement and there are many sources of potential bias that could affect the validity of the ...
Houwing, S. +2 more
openaire +3 more sources
European Journal of Epidemiology, 2004
This paper summarizes several studies that can be appended to conventional case-control studies especially in the context of case-control studies that focus on etiologic questions. Appending studies to case-control studies may further add to the understanding of the epidemiology of diseases under investigation.
Stang, Andreas, Jöckel, Karl-Heinz
openaire +3 more sources
This paper summarizes several studies that can be appended to conventional case-control studies especially in the context of case-control studies that focus on etiologic questions. Appending studies to case-control studies may further add to the understanding of the epidemiology of diseases under investigation.
Stang, Andreas, Jöckel, Karl-Heinz
openaire +3 more sources
JAMA: The Journal of the American Medical Association, 1982
To the Editor.— The article by Hayden et al (1982;247:326-331) on the methodology of the case-control study contains a factual error in describing articles published previously. 1,2 They report that in two studies of reserpine and breast cancer, "patients with thyrotoxicosis, renal disease, or cardiovascular disease were excluded from the control, non-
openaire +2 more sources
To the Editor.— The article by Hayden et al (1982;247:326-331) on the methodology of the case-control study contains a factual error in describing articles published previously. 1,2 They report that in two studies of reserpine and breast cancer, "patients with thyrotoxicosis, renal disease, or cardiovascular disease were excluded from the control, non-
openaire +2 more sources
Preventive Medicine, 1994
The nested case-control study design (or the case-control in a cohort study) is described here and compared with other designs, including the classic case-control and cohort studies and the case-cohort study. In the nested case-control study, cases of a disease that occur in a defined cohort are identified and, for each, a specified number of matched ...
openaire +2 more sources
The nested case-control study design (or the case-control in a cohort study) is described here and compared with other designs, including the classic case-control and cohort studies and the case-cohort study. In the nested case-control study, cases of a disease that occur in a defined cohort are identified and, for each, a specified number of matched ...
openaire +2 more sources
BMJ, 2010
The association between suicide and the use of calcium channel blockers in people with hypertension was investigated using a nested case-control study design.1 Data were taken from the general practice research database, a computerised database of anonymised longitudinal medical records collected prospectively in primary care. The cohort of people with
openaire +2 more sources
The association between suicide and the use of calcium channel blockers in people with hypertension was investigated using a nested case-control study design.1 Data were taken from the general practice research database, a computerised database of anonymised longitudinal medical records collected prospectively in primary care. The cohort of people with
openaire +2 more sources
2011
Until now we have mainly treated cohort studies. This was true for analytic studies conducted by following up certain cohorts in order to investigate the influence of a risk factor on health. It was equally true for clinical trials. It also holds for the estimation of the predictive values of a diagnostic test where we start from two “cohorts”, namely ...
Alastair Scott, Chris Wild
openaire +2 more sources
Until now we have mainly treated cohort studies. This was true for analytic studies conducted by following up certain cohorts in order to investigate the influence of a risk factor on health. It was equally true for clinical trials. It also holds for the estimation of the predictive values of a diagnostic test where we start from two “cohorts”, namely ...
Alastair Scott, Chris Wild
openaire +2 more sources