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Urology. 2010 Mar;75(3):543-6, 546.e1. doi: 10.1016/j.urology.2009.08.007. Epub 2009 Oct 24.

Changes in gender distribution of urinary stone disease.

Author information

1
Division of Health Services Research, Department of Urology, The University of Michigan, Ann Arbor, Michigan 48109, USA. sethstro@umich.edu

Abstract

OBJECTIVES:

To explore using population-based data the extent to which gender-specific rates of stone disease are changing. Historically, stone disease has been more common among men than women. However, differential changes in dietary intake patterns, fluid intake, and obesity in men and women may cause shifts in stone disease incidence and prevalence.

METHODS:

The State Ambulatory Surgical Database and the State Inpatient Databases were queried for procedures related to renal colic or urolithiasis. Population-based rates of utilization were calculated for the years 1998-2004 by gender. Poisson regression models were fit to measure changes in utilization rates over time.

RESULTS:

Of the 107,411 discharges for stone disease, 41,272 (38%) occurred in women. Service utilization increased in both men and women (86.6-105.5 and 42.5-64.4 per 100,000; P <.01 in both). However, the growth rate in women outpaced men (P <.01). Rates of outpatient (57.2-65.8 and 27.0-38.9 per 100,000; P <.01) and ambulatory surgery center utilization (6.4-17.7 and 2.9-9.3 per 100,000 men and women; P <.01) increased significantly in men and women, but inpatient utilization only increased in women (12.5-16.3 per 100,000; P <.01).

CONCLUSIONS:

Resource utilization for stone disease continues to increase. Most of this increase appears to be due to an increase in disease among women. Increasing obesity, dietary changes, or decreased fluid intake may be contributing to the rapid increase in stone disease treatments in women.

PMID:
19854493
PMCID:
PMC3410535
DOI:
10.1016/j.urology.2009.08.007
[Indexed for MEDLINE]
Free PMC Article
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