Controls drawn from neighbours

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Summary The Pananicolaou (Pap)-smear history of 212 cases of invasive cervical was compared with that of 1060 age-matched controls drawn from neighbours. In the 5 years before the year of diagnosis 32% of the cases had been screened by Pap smear, compared with 56% of the controls. This difference was statistically highly significant (p<0.0001) and indicated a relative risk of invasive cancer of 2.7 in women who had not been screened by Pap smear, compared with those who had. Differences in Pap-smear, history between cases and controls persisted when the data were stratified by age, income, education, marital history, smoking habit, employment status, and access to medical care. These results support the belief that the Pap smear is an effective screening procedure for invasive cervical cancer A. Indicate the type of study, whether the study is descriptive or analytic. If the study is an analytic study, indicate whether it is a case control, a cohort or an experimental study. B. When the study is a case control, a cohort or an experimental study, construct one 2 x 2 table summarizing the results of the study. For the 2 x 2 tables, indicate the exposure and the outcome studied.

Reference no: EM133832764

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