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Activity Number:
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192
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Type:
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Topic Contributed
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Date/Time:
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Monday, July 30, 2007 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Statistics in Epidemiology
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| Abstract - #309133 |
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Title:
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Interval-Censored Regression for Modeling the Effect of Labor Progression on Uterine Rupture
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Author(s):
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Sarah Ratcliffe*+ and George A. Macones
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Companies:
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University of Pennsylvania and Washington University in St. Louis
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Address:
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619 Blockley Hall, Philadelphia, PA, 19038,
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Keywords:
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interval censoring ; longitudinal
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Abstract:
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During the first stage of labor, a woman's progression is routinely monitored by cervical dilation. The dilation over time is known as the labor curve, and the timing of each centimeter increase in dilation can yield potentially useful information about labor complications. However, women may be at any dilation when they arrive at the hospital and dilations are only monitored intermittently during labor. Thus, the exact timing of each transition from dilation to the next is unknown. Rather, we have a time interval over which the transition occurred. We show how interval censored regression can be used to examine the effect of labor progression on the risk of uterine rupture in women attempting a vaginal birth after a cesarean section (VBAC).
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