5 Ergebnisse.

A seventy-year-old physician watched a small frazzled, deathly ill diabetic dog take its last breath. He was overcome with a sudden inexplicable feeling of loss and bewilderment. After a lifetime of experiencing hundreds of deaths in the emergency room, in the war zone, and of friends and family, he was suddenly obsessed with developing a better understanding of life-a more objective, and as it were, scientific explanation. Beginning with the ...

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Es considerable el desacuerdo existente en la adecuación de los diversos métodos para realizar la investigación evaluativa. Uno de los debates actuales, de intensidad creciente, se centra en la diferencia que existe entre los métodos cualitativos y cuantitativos. La polémica, sin embargo, no es nueva y son frecuentes las discusiones planteadas en términos dicotómicos y, a veces, antagónicos, entre las dos perspectivas básicas.Los autores ofrec...

Clinical trials have taken a prominent role in the research and approval of drugs. This text offers a summary of statistical design, including cross-over designs, sample size estimation, sequential methods for interim analyses, survival analysis, and repeated measures.

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