1. Trends in in-hospital cardiopulmonary resuscitation and survival in adults receiving maintenance dialysis.

    JAMA Internal Medicine 175(6):1028 (2015) PMID 25915762 PMCID PMC4451394

    Understanding cardiopulmonary resuscitation (CPR) practices and outcomes can help to support advance care planning in patients receiving maintenance dialysis. To characterize patterns and outcomes of in-hospital CPR in US adults receiving maintenance dialysis. This national retrospective cohort ...
  2. Determination of colonoscopy indication from administrative claims data.

    Medical Care 52(4):e21 (2014) PMID 22437619 PMCID PMC3387505

    Colonoscopy outcomes, such as polyp detection or complication rates, may differ by procedure indication. To develop methods to classify colonoscopy indications from administrative data, facilitating study of colonoscopy quality and outcomes. We linked 14,844 colonoscopy reports from the Clinical...
  3. Determination of colonoscopy indication from administrative claims data.

    Medical Care 52(4):e21 (2014) PMID 22437619 PMCID PMC3387505

    Colonoscopy outcomes, such as polyp detection or complication rates, may differ by procedure indication. To develop methods to classify colonoscopy indications from administrative data, facilitating study of colonoscopy quality and outcomes. We linked 14,844 colonoscopy reports from the Clinical...
  4. Healthcare intensity at initiation of chronic dialysis among older adults.

    Journal of the American Society of Nephrology 25(1):143 (2014) PMID 24262795 PMCID PMC3871783

    Little is known about the circumstances under which older adults initiate chronic dialysis and subsequent outcomes. Using national registry data, we conducted a retrospective analysis of 416,657 Medicare beneficiaries aged ≥67 years who initiated chronic dialysis between January 1995 and Decembe...
  5. Healthcare intensity at initiation of chronic dialysis among older adults.

    Journal of the American Society of Nephrology 25(1):143 (2014) PMID 24262795 PMCID PMC3871783

    Little is known about the circumstances under which older adults initiate chronic dialysis and subsequent outcomes. Using national registry data, we conducted a retrospective analysis of 416,657 Medicare beneficiaries aged ≥67 years who initiated chronic dialysis between January 1995 and Decembe...
  6. Healthcare intensity at initiation of chronic dialysis among older adults.

    Journal of the American Society of Nephrology 25(1):143 (2014) PMID 24262795 PMCID PMC3871783

    Little is known about the circumstances under which older adults initiate chronic dialysis and subsequent outcomes. Using national registry data, we conducted a retrospective analysis of 416,657 Medicare beneficiaries aged ≥67 years who initiated chronic dialysis between January 1995 and Decembe...
  7. Healthcare intensity at initiation of chronic dialysis among older adults.

    Journal of the American Society of Nephrology 25(1):143 (2014) PMID 24262795 PMCID PMC3871783

    Little is known about the circumstances under which older adults initiate chronic dialysis and subsequent outcomes. Using national registry data, we conducted a retrospective analysis of 416,657 Medicare beneficiaries aged ≥67 years who initiated chronic dialysis between January 1995 and Decembe...
  8. Major medical outcomes with spinal augmentation vs conservative therapy.

    JAMA Internal Medicine 173(16):1514 (2013) PMID 23836009 PMCID PMC4023124

    The symptomatic benefits of spinal augmentation (vertebroplasty or kyphoplasty) for the treatment of osteoporotic vertebral compression fractures are controversial. Recent population-based studies using medical billing claims have reported significant reductions in mortality with spinal augmenta...
  9. Major medical outcomes with spinal augmentation vs conservative therapy.

    JAMA Internal Medicine 173(16):1514 (2013) PMID 23836009 PMCID PMC4023124

    The symptomatic benefits of spinal augmentation (vertebroplasty or kyphoplasty) for the treatment of osteoporotic vertebral compression fractures are controversial. Recent population-based studies using medical billing claims have reported significant reductions in mortality with spinal augmenta...
  10. Interspinous spacers compared with decompression or fusion for lumbar stenosis: complications and repeat operations in the Medicare population.

    Spine 38(10):865 (2013) PMID 23324936 PMCID PMC3855445

    Retrospective cohort analysis of Medicare claims for 2006-2009. To examine whether interspinous distraction procedures are used selectively in patients with more advanced age or comorbidity, and whether they are associated with fewer complications, lower costs, and less revision surgery than lam...
  11. Interspinous spacers compared with decompression or fusion for lumbar stenosis: complications and repeat operations in the Medicare population.

    Spine 38(10):865 (2013) PMID 23324936 PMCID PMC3855445

    Retrospective cohort analysis of Medicare claims for 2006-2009. To examine whether interspinous distraction procedures are used selectively in patients with more advanced age or comorbidity, and whether they are associated with fewer complications, lower costs, and less revision surgery than lam...
  12. Treatment intensity at the end of life in older adults receiving long-term dialysis.

    Archives of Internal Medicine 172(8):661 (2012) PMID 22529233

  13. Treatment intensity at the end of life in older adults receiving long-term dialysis.

    Archives of Internal Medicine 172(8):661 (2012) PMID 22529233

  14. Use of bone morphogenetic proteins in spinal fusion surgery for older adults with lumbar stenosis: trends, complications, repeat surgery, and charges.

    Spine 37(3):222 (2012) PMID 21494195 PMCID PMC3167951

    Retrospective cohort study of Medicare claims. Examine trends and patterns in the use of bone morphogenetic proteins (BMP) in surgery for lumbar stenosis; compare complications, reoperation rates, and charges for patients undergoing lumbar fusion with and without BMP. Small, randomized trials ha...
  15. Use of bone morphogenetic proteins in spinal fusion surgery for older adults with lumbar stenosis: trends, complications, repeat surgery, and charges.

    Spine 37(3):222 (2012) PMID 21494195 PMCID PMC3167951

    Retrospective cohort study of Medicare claims. Examine trends and patterns in the use of bone morphogenetic proteins (BMP) in surgery for lumbar stenosis; compare complications, reoperation rates, and charges for patients undergoing lumbar fusion with and without BMP. Small, randomized trials ha...
  16. Revision surgery following operations for lumbar stenosis.

    Journal of Bone and Joint Surgery (American) 93(21):1979 (2011) PMID 22048092 PMCID PMC3490709

    For carefully selected patients with lumbar stenosis, decompression surgery is more efficacious than nonoperative treatment. However, some patients undergo repeat surgery, often because of complications, the failure to achieve solid fusion following arthrodesis procedures, or persistent symptoms...
  17. Revision surgery following operations for lumbar stenosis.

    Journal of Bone and Joint Surgery (American) 93(21):1979 (2011) PMID 22048092 PMCID PMC3490709

    For carefully selected patients with lumbar stenosis, decompression surgery is more efficacious than nonoperative treatment. However, some patients undergo repeat surgery, often because of complications, the failure to achieve solid fusion following arthrodesis procedures, or persistent symptoms...
  18. Accuracy of Medicare claims for identifying findings and procedures performed during colonoscopy.

    Gastrointestinal Endoscopy 73(3):447 (2011) PMID 20950800 PMCID PMC3397774

    Administrative claims data are frequently used for quality measurement. To examine the accuracy of administrative claims for potential colonoscopy quality measures, including findings (polyp or tumor detection), procedures (biopsy or polypectomy), and incomplete colonoscopy. Cross-sectional stud...
  19. Accuracy of Medicare claims for identifying findings and procedures performed during colonoscopy.

    Gastrointestinal Endoscopy 73(3):447 (2011) PMID 20950800 PMCID PMC3397774

    Administrative claims data are frequently used for quality measurement. To examine the accuracy of administrative claims for potential colonoscopy quality measures, including findings (polyp or tumor detection), procedures (biopsy or polypectomy), and incomplete colonoscopy. Cross-sectional stud...
  20. Accuracy of Medicare claims for identifying findings and procedures performed during colonoscopy

    Gastrointestinal Endoscopy 73(3):447 (2011) PMID 20950800 PMCID PMC3397774

    Background Administrative claims data are frequently used for quality measurement.