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CONTEXT A prior national survey documented the high prevalence and costs of alternative medicine use in the United States in 1990. OBJECTIVE To document trends in alternative medicine use in the United States between 1990 and 1997. DESIGN Nationally representative random household telephone surveys using comparable key questions were conducted in 1991(More)
CONTEXT Complementary and alternative medicine (CAM) use by US adults increased substantially between 1990 and 1997, yet little is known about more recent trends. OBJECTIVE Compare CAM therapy use by US adults in 2002 and 1997. DESIGN Comparison of two national surveys of CAM use by US adults: (1) the Alternative Health/Complementary and Alternative(More)
BACKGROUND Although recent research has shown that many people in the United States use complementary and alternative medical (CAM) therapies, little is known about time trends in use. OBJECTIVE To present data on time trends in CAM therapy use in the United States over the past half-century. DESIGN Nationally representative telephone survey of 2055(More)
This paper concerns a recursive partitioning algorithm for incomplete survival data. The splitting criterion employed is exponential log-likelihood loss. The method has been integrated into a computer program similar in structure to the commercial package CART. Special features incorporated into the program include a modification to prevent zero hazard(More)
BACKGROUND Preliminary evidence suggests that meditative exercise may have benefits for patients with chronic systolic heart failure (HF); this has not been rigorously tested in a large clinical sample. We sought to investigate whether tai chi, as an adjunct to standard care, improves functional capacity and quality of life in patients with HF. METHODS A(More)
OBJECTIVE To investigate whether placebo effects can experimentally be separated into the response to three components-assessment and observation, a therapeutic ritual (placebo treatment), and a supportive patient-practitioner relationship-and then progressively combined to produce incremental clinical improvement in patients with irritable bowel syndrome.(More)
BACKGROUND Contrast-enhanced cardiac magnetic resonance imaging (CMR) can determine the extent of myocardial scar from infarction (MI). However, the prognostic significance of unrecognized myocardial scar by CMR in patients without a history of MI is unknown. METHODS AND RESULTS One hundred ninety-five patients without a known prior MI underwent CMR for(More)
BACKGROUND Although computerized physician order entry reduces medication errors among inpatients, little is known about the use of this system in primary care. METHODS We calculated the override rate among 3481 consecutive alerts generated at 5 adult primary care practices that use a common computerized physician order entry system for prescription(More)
CONTEXT Racial/ethnic groups comprised largely of foreign-born individuals have lower rates of cancer screening than white Americans. Little is known about whether these disparities are related primarily to their race/ethnicity or birthplace. OBJECTIVE To determine whether foreign birthplace explains some racial/ethnic disparities in cancer screening. (More)
OBJECTIVE This study presents data on the use of complementary and alternative therapies to treat anxiety and depression in the United States. METHOD The data came from a nationally representative survey of 2,055 respondents (1997-1998) that obtained information on the use of 24 complementary and alternative therapies for the treatment of specific chronic(More)