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Retrospective clinical studies
Journal of Pediatric Urology, 2016Patient-based retrospective studies are most often based on one unique patient cohort from one particular institution. At best, they can give rise to observations leading to future prospective studies and new hypotheses. The study by Pamela Ellsworth et al.
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Annals of Internal Medicine, 1974
The retrospective or case-control method of epidemiologic investigation is described and compared with the prospective (cohort) method. Both methods have the weakness of being observational or nonexperimental in nature. 2 methods employed in retrospective studies for reducing (but never eliminating) the likelihood of spurious inferences through ...
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The retrospective or case-control method of epidemiologic investigation is described and compared with the prospective (cohort) method. Both methods have the weakness of being observational or nonexperimental in nature. 2 methods employed in retrospective studies for reducing (but never eliminating) the likelihood of spurious inferences through ...
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Some aspects of retrospective studies
Journal of Chronic Diseases, 1960The "retrospective" or "case-control" study provides a more economical way of estimating the relative risk of disease than the prospective method because it does not require the devotion of considerable study resources to those who did not develop the disease. In such a study one identifies all or a well-defined sample of the new cases of a disease as
William Haenszel, Jerome Cornfield
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Propranolol rebound—A retrospective study
The American Journal of Cardiology, 1978To assess the effects of sudden withdrawal of propranolol on inpatients with coronary artery disease, 102 patients admitted for cardiac catheterization were evaluated. Criteria for inclusion in the study were angiographically documented coronary artery disease, propranolol therapy at a mean daily dose of at least 80 mg and abrupt discontinuation of ...
Joseph D. Babb +6 more
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Shigella Bacteremia: A Retrospective Study
Clinical Pediatrics, 2003The aims of this study were to determine the risk factors in, and the clinical and laboratory characterizations of, Shigella bacteremia, as well as the subspecies of Shigella, and the antibiotic susceptibility. A retrospective study of all patients younger than 18 years of age with documented Shigella bacteremia from January 1989 through December 2001
Shai Marcu +3 more
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A retrospective study of follicular lymphomas
Histopathology, 1989Sixty‐four cases of follicular lymphoma followed‐up for 10 years have been studied. The influence of age, sex, histological appearance, immunophenotype and T‐cell content on prognosis has been examined. Initial evaluation indicated that increasing age, relatively low numbers of intrafollicular T‐cells and absence of mantle zones around the neoplastic ...
S. D. Henderson +3 more
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Retrospective study of optometric referrals
Ophthalmic and Physiological Optics, 1992We undertook a retrospective study of the referral patterns of optometrists. During the study period 13 107 patients had been seen, of whom 2.86% had been referred. Of the referred patients. 66.67% were referred to an ophthalmologist via the general practitioner. 25.87% to their general practitioner alone, and 7.47% directly to an ophthalmologist.
A. J. Hobley +2 more
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A Retrospective Study of Canine Pancytopenia
Veterinary Clinical Pathology, 1999Abstract—To better define the incidence and causes of canine pancytopenia, we retrospectively evaluated the results of complete blood counts submitted to the University of Minnesota Veterinary Teaching Hospital during a 1‐year period. Pancytopenia was defined as packed cell volume < 36%, total leukocyte count < 6, 000/μL or total segmented ...
Douglas J. Weiss +2 more
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Chromatopsia: A Retrospective Study
Ophthalmologica, 1983In a retrospective study of 13 patients with complaints of chromatopsia, the history, clinical picture and theory of color adaptation suggest a relatively rapid change in color perception leading to ...
J.R.M. Cruysberg, A. Pinckers
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Pavlik’s method: a retrospective study
Archives of Orthopaedic and Trauma Surgery, 2006This retrospective study of the early work of Arnold Pavlik in the treatment of developmental dysplasia of the hip proves the success of his method in eradicating avascular necrosis (AVN) resulting from other modes of treatment. Authors analyzed some 100 charts of children treated for CDH, as it was known at that time, between 1969 and 1981, and ...
Viktor Bialik +3 more
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