TY - JOUR
AU - MARRISON, ALAN S.
AB - AMERICAN JOUENAL or EPIDBMIOUXIT Vol. 115, No. 1 Copynght © 1982 by The Johns Hopkins University School of Hygiene and Public Health Printed in U£-A All rights reserved CASE DEFINITION IN CASE-CONTROL STUDIES OF THE EFFICACY OF SCREENING ALAN S. MORRISON Evaluation of the efficacy of screening mental and nonexperimental methods in programs involves the comparison of the evaluation of screening is available morbidity or mortality rates between elsewhere (1).) screened and unscreened populations. Disease rates in screened and un- Such comparisons are made most convinc- screened people can be compared nonex- ingly by means of experiments (1, 2), perimentally by means of the follow-up or exemplified by the study of screening for the case-control approach. The case- breast cancer carried out by the Health control method seems useful since it is Insurance Plan of Greater New York relatively economical and rapid, and does (HIP) (3). However, there are serious not depend on the availability of spe- practical difficulties with experimental cialized records. Recently, Clarke and studies of screening: they are expensive, Anderson (4) reported a case-control may require many years to complete, and study of the efficacy of the Pap smear in usually can be done only when 
TI - CASE DEFINITION IN CASE-CONTROL STUDIES OF THE EFFICACY OF SCREENING
JF - American Journal of Epidemiology
DO - 10.1093/oxfordjournals.aje.a113280
DA - 1982-01-01
UR - https://www.deepdyve.com/lp/oxford-university-press/case-definition-in-case-control-studies-of-the-efficacy-of-screening-PCFtz8sAum
SP - 6
EP - 8
VL - 115
IS - 1
DP - DeepDyve
ER -