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We examined how traditional (income, education) and nontraditional (public assistance, material deprivation, subjective social standing) socioeconomic status (SES) indicators were associated with self-rated health, physical functioning, and depression in ethnically diverse pregnant women. Using multiple regression, we estimated the association of(More)
BACKGROUND Despite extensive evaluation, our understanding of risk factors for premature delivery is incomplete. OBJECTIVE To examine whether a woman's health status and risk factors before pregnancy are associated with a woman's risk of preterm delivery, independent of risk factors that occur during pregnancy. DESIGN, SETTING, AND PARTICIPANTS(More)
BACKGROUND Federal and state agencies are considering ICU performance assessment and public reporting; however, an accurate method for measuring performance must be selected. In this study, we determine whether a substantial variation in ICU mortality performance still exists in modern ICUs, and compare the predictive accuracy, reliability, and data burden(More)
CONTEXT Current intensive care unit performance measures include in-hospital mortality after intensive care unit admission. This measure does not account for deaths occurring after transfer to another hospital or soon after discharge and therefore, may be biased. OBJECTIVE Determine how transfer rates to other acute care hospitals and early post-discharge(More)
BACKGROUND To develop and compare ICU length-of-stay (LOS) risk-adjustment models using three commonly used mortality or LOS prediction models. METHODS Between 2001 and 2004, we performed a retrospective, observational study of 11,295 ICU patients from 35 hospitals in the California Intensive Care Outcomes Project. We compared the accuracy of the(More)
OBJECTIVE We sought to determine whether race or ethnicity is independently associated with mortality or intensive care unit length of stay among critically ill patients after accounting for patients' clinical and demographic characteristics including socioeconomic status and resuscitation preferences. DESIGN Historical cohort study of patients(More)
PURPOSE Existing intensive care unit (ICU) mortality measurement systems address in-hospital mortality only. However, early postdischarge mortality contributes significantly to overall 30-day mortality. Factors associated with early postdischarge mortality are unknown. METHODS We performed a retrospective study of 8484 ICU patients. Our primary outcome(More)
BACKGROUND Existing risk adjustment models for intensive care unit (ICU) outcomes rely on manual abstraction of patient-level predictors from medical charts. Developing an automated method for abstracting these data from free text might reduce cost and data collection times. OBJECTIVE To develop a support vector machine (SVM) classifier capable of(More)
Presentation order in paired-comparison testing was varied to measure the impact of primacy versus recency effects on consumer product evaluations. Overall preference and product rating scores were gathered for 1196 male and female Ss aged 13--49 years in two consumer research studies covering 11 taste tests. First position preference bias characterized the(More)
BACKGROUND Return visits to the emergency department (ED) or hospital after an index ED visit strain the health system, but information about rates and determinants of revisits is limited. OBJECTIVE To describe revisit rates, variation in revisit rates by diagnosis and state, and associated costs. DESIGN Observational study using the Healthcare Cost and(More)