This Article  • Full text  • PDF  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Contact me when this article is cited  Related Content  • Related article  • Similar articles in JAMA  Social Bookmarking   What's this?

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

To the Editor: The article by Dr Leitzmann and colleagues¹ on coffee consumption and gallstone disease would be stronger if additional data were provided. First, it would be helpful to know the percentage of coffee drinkers (and amount of coffee consumed) in the original study population (N = 51,529) and in those excluded because of prior history of gallstones or cholecystectomy (number not mentioned). In other words, did coffee drinkers develop gallstone disease prior to the beginning of the study? Second, the authors also should provide the risk ratios for new coffee drinkers (or those who have increased their consumption during the study period) and for ex-coffee drinkers (those who have quit or reduced their coffee consumption during the study period) on an adjusted per-year basis. These data would help to further confirm the hypothesis and determine the time frame in which the effects of coffee are expected to occur.

. . . [Full Text of this Article]

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?

RELATED ARTICLE

A Prospective Study of Coffee Consumption and the Risk of Symptomatic Gallstone Disease in Men
Michael F. Leitzmann, Walter C. Willett, Eric B. Rimm, Meir J. Stampfer, Donna Spiegelman, Graham A. Colditz, and Edward Giovannucci
JAMA. 1999;281(22):2106-2112.
ABSTRACT | FULL TEXT