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BACKGROUND We assessed aspects of Seguro Popular, a programme aimed to deliver health insurance, regular and preventive medical care, medicines, and health facilities to 50 million uninsured Mexicans. METHODS We randomly assigned treatment within 74 matched pairs of health clusters-ie, health facility catchment areas-representing 118 569 households in(More)
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We develop an approach to conducting large-scale randomized public policy experiments intended to be more robust to the political interventions that have ruined some or all parts of many similar previous efforts. Our proposed design is insulated from selection bias in some circumstances even if we lose observations; our inferences can still be unbiased even(More)
The mitotic checkpoint is a mechanism that arrests the progression to anaphase until all chromosomes have achieved proper attachment to mitotic spindles. In cancer cells, satisfaction of this checkpoint is frequently delayed or prevented by various defects, some of which have been causally implicated in tumorigenesis. At the same time, deliberate induction(More)
This paper reports the trial of a wearable data capture device, SenseCam, as a resource for digital narratives and uses data from the trial to reflect on the models of the 'mind' that underscore HCI. More particularly, over a period of one week, 5 participants and 2 researchers used SenseCams to capture digital traces of their experiences, and used the same(More)
7 Conestadistica 2 Abstract Background In what may be the largest randomized health policy experiment to date, we evaluate aspects of Seguro Popular, a program to deliver health insurance, regular and preventive medical care, pharmaceuticals, and health facilities to 50 million uninsured Mexicans. Methods We randomized treatment within 74 matched pairs of "(More)
Outcome prediction is becoming increasingly important in medicine, but when a resource is scarce the need for accurate prediction becomes acute. Prediction based on biostatistical models has been in use for many years, but in areas such as renal transplantation their results have been disappointing. Recently however, there has been growing interest in the(More)
This paper reports the trial of a memory prosthesis, SenseCam, as a resource for digital narratives. Over a period of one week, six participants were asked to use SenseCams to capture digital traces of their experiences, and to use the same to create 'story telling' materials for presentation. The study found that all users delighted in the devices, though(More)
Social scientists often attribute moderation of the political salience of ethnicity, in ethnically diverse societies, to the presence of cross-cutting cleavages—that is, to dimensions of identity or interest along which members of the same ethnic group may have diverse allegiances. Yet estimating the causal effects of cross-cutting cleavages is difficult.(More)