It can be a concurrent study, meaning that you start collecting data now non-current, typical of a chart review or review of other records, or a combination of the two. It is important to note that what makes the Cohort design "prospective" in nature is that you are working from suspected cause to effect (or outcome). Here is a simple schematic of the Cohort study: As always, it can be exciting to think that you may have noticed something that no one else has noticed, and you want to proceed according to certain rules to insure that you remain honest and prudent. So you set out to examine some representative cases very closely to see if you are correct. Treatment with a particular procedure or medication seems to lead to a resolution of particular symptoms.seems to lead to a particular disease state, or Exposure to a particular chemical, water from a particular source, etc.Hvad kan vi laere ved å følge tuberkulosens gang fra generasjon til generasjon? Norsk Mag f Laegevidenskhaben 1930 June: 642–60.Cohort studies are prospective in nature. Urinary aflatoxin biomarkers and risk of hepatocellular carcinoma. A prospective study of endogenous estrogens and breast cancer in postmenopausal women. Toniolo PG, Levitz M, Zeleniuch-Jacquotte A, et al. Lack of effect of long-term supplementation with beta-carotene on the incidence of malignant neoplasms and cardiovascular disease. Hennekens CH, Buring JE, Manson JE, et al. Serum beta-carotene and subsequent risk from cancer: results from the BUPA study. Wald NJ, Thompson SG, Densem JW, Boreham J, Bailey A. Low serum vitamin A and subsequent risk of cancer. Cancer risks associated with occupational exposure to magnetic fields among electric utility workers in Ontario and Quebec, Canada, and France, 1970–1989.
Thériault G, Goldberg M, Miller AB et al. Relationship of mortality to measures of environmental asbestos pollution in an asbestos textile factory. Peto J, Doll R, Hermon C, Clayton R, Goffe T, Binns W. Dust exposure and mortality in an American chrysotile textile plant. McDonald AD, Fry JS, Woolley AJ, McDonald JC. A sampling procedure for measuring industrial dust exposure. Asbestosis: a study of doseresponse relationships in an asbestos textile factory. 2, 829–36.īerry G, Gilson JC, Holmes S, Lewinsohn HC, Roach SA.
Biological effects of mineral fibres Lyon: International Agency for Research on Cancer, 1980: vol. Lung cancer mortality in relation to measured dust levels in an asbestos textile factory. The development of cohort studies in epidemiology: a review. Stats Med 1987 6: 469–81.ĭoll R, Vessey MP, Beasley RWR, et al., The mortality of gas-workers: final report of a prospective study. Models for temporal variation in cancer rates II: age-periodcohort models. Age, period and cohort models applied to cancer mortality rates. Cancer mortality based on the recently revised doses (DS86). Studies of the mortality of A-bomb survivors. Cancer mortality following x-ray treatment for ankylosing spondylitis.
#RETROSPECTIVE COHORT VS CASE CONTROL SERIES#
(Med Res Council Special Report Series No. Leukaemia and aplastic anaemia in patients irradiated for ankylosing spondylitis. (1994 Report to the General Assembly with scientific annexes).Ĭourt Brown WM, Doll R. Sources and effects of ionizing radiation. United Nations Scientific Committee on the Effects of Atomic Radiation. Future research on atomic bomb survivors J Radiat Res 1975, 16 (Suppl): 149–65. Mortality in children exposed to A-bombs while in utero. Description of the sample and mortality, 1950–1960. Hiroshima Nagasaki: Atomic Bomb Casualty Commission 1955: 33–59. Report of ad hoc committee for appraisal of ABCC program. Washington, DC: National Academy of Sciences, 1956.įrancis T Jr, Jablon S, Moore FE. London: Her Majesty's Stationery Office, 1956. The hazards to man of nuclear and allied radiations. Reflections on the work of the Atomic Bomb Casualty Commission in Japan.
Anomalies occurring in children exposed in utero to the atomic bomb in Hiroshima. Clinical and pathological characteristics of radiation cataract. Am J Med 1952 13: 311–21.Ĭogan DG, Donaldson DD, Reese AB. Incidence of leukaemia in survivors of the atomic bomb in Hiroshima and Nagasaki. Brit J Cancer 1947 1: 260.įolley JH, Borges W, Yamasaki T. A further study of the incidence of cancer of the lung and larynx. The causes of death among gasworkers with special reference to cancers of the lung. Risk of persons in familial contact with pulmonary tuberculosis.
0 kommentar(er)
