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The classical Heckman (1976, 1979) selection correction estimator (heckit) is misspecified and inconsistent if an interaction of the outcome variable and an explanatory variable matters for selection. To address this specification problem, a full information maximum likelihood estimator and a...
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Das Versorgungssystem steckt in einer Krise. Mittlerweile beginnt sich jedoch die Einsicht durchzusetzen, dass eine wirtschaftliche Gesundung nicht zu haben ist ohne Eingriffe in die Rahmenbedingungen der Selbstverwaltung und die Strukturen und Prozesse der Versorgung.
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Despite spending far more on medical care than any other nation and despite having seen a century of unparalleled improvement in population health and longevity, the United States has fallen behind many of its global counterparts and competitors in such health outcomes as overall life expectancy...
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