When Quantity and Quality Don't Mix

Commentary: Balancing quantity and quality when designing epidemiological studies.

increasing identification of genetic factors which predispose people to higher risk of certain diseases will reinvigorate the epidemiology of such diseases and provide new challenges for study design. Some of these design issues are addressed in the paper in this issue of the International Journal of Epidemiology by Wong et al., which provides a useful formula for calculating sample size estima...

Quality and Quantity Competition

Between Quality and Quantity:

Rockefeller Archive Center Research Reports Online is a periodic publication of the Rockefeller Archive Center, a division of The Rockefeller University. Edited by Ken Rose and Erwin Levold under the general direction of the Center's director, Darwin H. Stapleton, Research Reports Online is intended to foster the network of scholarship in the history of philanthropy and to highlight the diverse...

Cool data: quantity AND quality.

The use of cryo-techniques in macromolecular crystallography has increased enormously over the last eight years and has become a vital part of modern X-ray data-collection methods. This paper presents some reasons for the rise in popularity of cryo-techniques and a brief outline of the basic methods, followed by a detailed discussion of factors to be considered when trying to optimize both the ...

Cataract surgery--quantity and quality.

Editorials Cataract surgery—quantity and quality In this issue, we present the initial results from the second national survey of cataract surgery, which was a collabora-tive endeavour supported by the Department of Health, the Royal College of Ophthalmologists, the College of Optometrists, and the Royal College of Nursing. Great credit is due to the authors for what was clearly an enormous tas...