Age Heaping and Cancer Rate Estimation in Nigeria

Benjamin J.S. al-Haddad, Elima Jedy-Agba, Emmanual Oga & Clement Adebamowo
Age heaping is an important source of demographic bias in many countries. There is little scholarship on the effect of age heaping on cancer rate estimation. We use Nigerian demographic and cancer registry data to (1) quantify age heaping in states and within cancer registries using the Myers Blended Index and (2) examine the effect of residual age heaping bias on age standardized cancer rates (ASRs). We find severe age heaping at the level of...
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