作者：Gersovitz, M; Jacoby, HG; Dedy, FS; Tape, AG
作者单位：Johns Hopkins University; The World Bank; Ecole Normale Superieure (ENS) d'Abidjan
摘要：The AIDS epidemic in Africa depends on heterosexual behavior, about which little is known. National Knowledge, Attitudes and Practices (KAP) surveys are a potentially important data source but are compromised because women report less-often, much less-sexual activity than men. This imbalance is investigated using questions on the type of activity (with regular or casual partners and involving compensation) and on the duration of abstinence (time since last act), as well as other socioeconomic ...
作者：Lange, N
作者单位：Harvard University; Harvard Medical School; Harvard University; Harvard University Medical Affiliates; McLean Hospital
作者：Neuhaus, JM
作者单位：University of California System; University of California San Francisco
摘要：Although omitting covariates associated with the response in generalized linear models can yield seriously biased estimates of the effects of the included covariates, in certain settings there is no bias. This article considers the effect of omitted covariates on the efficiency of the estimated effects of the included covariates in these cases. I consider the case where the omitted covariate is independent of the included covariates, as in studies with randomized treatment assignment, as well ...
