Re: Knowledge is power - Make up your own mind.

This is a large institute that probably knows what they are talking about and a prepared to put it in writing.

It reports with a 95% confidence level that the growth rate of Gallstones is: 1.7–2.3 mm

Gallstone Growth, Size, and Risk of Gallbladder Cancer : An Interracial Study
A B LOWENFELS*, A M WALKER**, D P ALTHAUS, G TOWNSEND and L DOMELLÖF$
*Department of Surgery, New York Medical College Valhalla, New York, 10595 USA.
**Department of Epidemiology, Harvard University School of Public Health Boston, Massachusetts, USA.
Department of Pathology, Phoenix Indian Medical Center Phoenix, Arizona, USA.
Department of Pathology, Louisiana State University Medical Center New Orleans, Louisiana, USA.
$Department of Surgery, University of Umeå Umeå, Sweden.

Lowenfels A B (Department of Surgery, New York Medical College, Valhalla, New York 10595, USA), Walker A M, Althaus D P, Townsend G and Domellöf L. Gallstone growth, size and risk of Gallbladder Cancer : An interracial study. International Journal of Epidemiology 1989, 18: 50–54.

To investigate gallstone size, growth, and the relation between stone size and Gallbladder Cancer we have used cholecystectomy reports from 1676 female subjects (169 Whites, 531 Blacks, and 976 Native American Indians). Although the prevalence of Gallstones differs markedly in these groups it appears that the estimated growth rate of Gallstones in younger subjects, 2.0 mm per year (95% confidence interval: 1.7–2.3 mm) is homogeneous for all three groups. In both Indian and non-Indian populations the proportion of small stones diminished and the proportion of large stones increased over time. The growth rate in older subjects is very similar but they were not used in this particular study.
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