Results 1 to 10 of about 10,420,721 (307)

Cohort studies

open access: yesKerala Journal of Psychiatry, 2021
Cohort studies are observational analytical studies and are placed just below randomized controlled trials in the hierarchy of scientific evidence. They are also called longitudinal studies and can be prospective, retrospective or ambidirectional.
Pankajakshan Vijayanthi Indu   +1 more
doaj   +1 more source

Dietary Phytoestrogen Intake and The Risk of Endometriosis in Iranian Women: A Case-Control Study [PDF]

open access: yesInternational Journal of Fertility and Sterility, 2020
Background Endometriosis is an important gynecologic disease affecting reproductive-age women. Based on the effect of phytoestrogens on inflammatory, immunological and hormonal factors, limited studies have suggested that phytoestrogen consumption ...
Samaneh Youseflu   +3 more
doaj   +1 more source

How to Ask the Right Question and Find the Right Answer: Clinical Research for Transplant Nephrologists

open access: yesFrontiers in Immunology, 2022
Clinical research is about asking and answering questions. Before solutions relevant to clinical problems can be sought, clinicians must frame questions in ways that are answerable using the methods of clinical research.
Sonia Rodríguez-Ramírez   +4 more
doaj   +1 more source

Pre-illness isoflavone consumption and disease risk of ulcerative colitis: a multicenter case-control study in Japan. [PDF]

open access: yesPLoS ONE, 2014
Previous studies have suggested that estrogens play a role in the development of ulcerative colitis (UC). Because isoflavones have a similar structure to 17β-estradiol, dietary consumption of isoflavones may have similar influences on the development of ...
Satoko Ohfuji   +8 more
doaj   +1 more source

Association of Maternal Hyperhomocysteinemia with Preeclampsia: A Hospital Based Case-Control Study

open access: yesProceedings, 2021
Introduction: Preeclampsia is among the leading causes of feto-maternal morbidity and mortality throughout the world, especially in developing countries like Pakistan.
Zoofishan Qureshi   +4 more
doaj   +1 more source

Investigation on an outbreak of bacillary dysentery due to infection of Shigella sonnei in a town of Guangxi Province

open access: yesDialogues in Health, 2023
Objective: To provide a scientific basis for identifying the causes of an outbreak and providing preventive and control measures to prevent the recurrence of similar outbreaks. Study design: A case-control study.
Tian Ren   +6 more
doaj   +1 more source

Psoriasis and its association with metabolic syndrome: A case–Control study at a tertiary care center in a semi-Urban region of South India

open access: yesClinical Dermatology Review, 2023
Background: Metabolic syndrome (MS) has been associated with skin diseases such as psoriasis. They share a common inflammatory pathway and therefore have an impact on each other.
Akshay Samagani   +2 more
doaj   +1 more source

Case-control study of stroke and the quality of hypertension control in north west England [PDF]

open access: yes, 1997
Objective: To examine the risk of stroke in relation to quality of hypertension control in routine general practice across an entire health district. Design: Population based matched case-control study.
Cruickshank, K   +8 more
core   +2 more sources

Anal signs of child sexual abuse: a case–control study [PDF]

open access: yes, 2014
Background: There is uncertainty about the nature and specificity of physical signs following anal child sexual abuse. The study investigates the extent to which physical findings discriminate between children with and without a history of anal abuse ...
Hobbs, Christopher J   +1 more
core   +1 more source

Study designs: Part 3 - Analytical observational studies

open access: yesPerspectives in Clinical Research, 2019
In analytical observational studies, researchers try to establish an association between exposure(s) and outcome(s). Depending on the direction of enquiry, these studies can be directed forwards (cohort studies) or backwards (case–control studies).
Priya Ranganathan, Rakesh Aggarwal
doaj   +1 more source

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