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Statistical procedures for variable selection have become integral elements in any analysis. Successful procedures are characterized by high predictive accuracy, yielding interpretable models while retaining computational efficiency. Penalized methods that perform coefficient shrinkage have been shown to be successful in many cases. Models with correlated(More)
CONTEXT A previous randomized trial demonstrated that adding bevacizumab to carboplatin and paclitaxel improved survival in advanced non-small cell lung cancer (NSCLC). However, longer survival was not observed in the subgroup of patients aged 65 years or older. OBJECTIVE To examine whether adding bevacizumab to carboplatin and paclitaxel chemotherapy is(More)
BACKGROUND Medicare spending varies substantially across the United States. We evaluated the association between mean regional spending and survival in advanced cancer. METHODS We identified 116 523 subjects with advanced cancer from 2002 to 2007, using Surveillance, Epidemiology and End Results (SEER)-Medicare linked data. Subjects were aged 65 years and(More)
BACKGROUND Randomized trials report equivalent efficacy among various combinations of platinum-based regimens in advanced non-small cell lung cancer (NSCLC). Their relative effectiveness and comparability based on squamous versus nonsquamous histology is uncertain. METHODS The authors used the Surveillance, Epidemiology, and End Results (SEER)-Medicare(More)
BACKGROUND Honey bee (Apis mellifera) drones and workers show differences in morphology, physiology, and behavior. Because the functions of drones are more related to colony reproduction, and those of workers relate to both survival and reproduction, we hypothesize that the microclimate for worker brood is more precisely regulated than that of drone brood.(More)
CONTEXT Rectus capitis posterior (RCP) muscles have physical attachments to the pain-sensitive spinal dura. Atrophy of these muscles is associated with chronic headache in some patients. The authors suspect that the significance of atrophy in the RCP muscles has been undervalued because the functional role of these muscles is not well defined. OBJECTIVE(More)
A growing number of U.S. cities have large numbers of untested sexual assault kits (SAKs) in police property facilities. Testing older kits and maintaining current case work will be challenging for forensic laboratories, creating a need for more efficient testing methods. METHODS We evaluated selective degradation methods for DNA extraction using actual(More)
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