Assessing the impact of transplant case management on clinical outcomes.

OBJECTIVES: Case management is commonly used by health plans to attempt to improve the care received by their members who have complex needs, such as those who undergo transplantation. There are few observational studies evaluating the effects that transplant case management programs have on clinical outcomes following a solid organ transplant. This limits the understanding of the quantitative effectiveness of such programs. STUDY DESIGN: This retrospective cohort study of solid organ transplant recipients with access to a transplant case management program used a case-control study design. Propensity score 1:1 matching was used to balance the comparison groups on demographic and pretransplant clinical characteristics. METHODS: Health care claims data were used to determine whether program participation affected clinical outcomes following the transplant. A cohort of 1756 adults 18 years and older (878 cases and 878 controls) who had a solid organ transplant between 2018 and 2020 was followed beginning at the time of referral to transplant until 90 days following the transplant procedure. RESULTS: Transplant recipients who participated in the case management program had significantly lower 30-day and 90-day rejection rates, fewer 90-day readmissions, lower discharge mortality and 90-day mortality, and fewer bed days post transplant compared with those who did not participate in case management. CONCLUSIONS: Patients undergoing a solid organ transplant had improved clinical outcomes when they participated in a specialized case management program sponsored by their health plan.

A commercial transplant network's perspective of value in solid organ transplantation: Strategizing for value in transplant care.

INTRODUCTION: Solid organ transplantation has been an area of great interest to commercial payers ever since it moved into mainstream medical care beginning in the 1980s. Over the years a system of evaluating transplant program performance based on volume and one year graft and patient survival has developed. While this system has served its purpose, there is an increasing realization from payers that a need exists for a more sophisticated way to evaluate quality and cost-effectiveness of these complex procedures. We report on the perspective of a large transplant network and its efforts to better understand the drivers of value over the entire continuum of care from referral through one year post-transplant. METHODS: We evaluated members of a large commercial health plan who were referred for solid organ transplantation between January 1, 2010 and April 30, 2014. A total of 18,453 cases were evaluated for both clinical and economic outcomes. RESULTS: We report on two areas that can impact value over the entire continuum of care. Large variation in clinical practice and cost was noted. The observed variation was independent of inclusion in the transplant network's preferred network. The average pre-transplant and post-transplant costs for kidney, liver and heart transplantation cases at center level showed a variation of between 18 and 250% of the network's average. Clinical outcomes of median days on the waitlist, waitlist mortality and readmission within thirty days after transplant also showed wide variation. There was similar wide variation in cardiac evaluation of transplant candidates despite the existence of published recommendations. We demonstrated that pre-emptive renal transplantation is a high value strategy for this membership independent of donor source. CONCLUSION: In the studied population the data show wide variation in both clinical and economic parameters related to the transplant process in programs with statistically similar one year patient and graft survival. These results require further examination. In this era of increased concern about delivering value in medical care we may need to reassess how we evaluate organ transplantation programs.

Chiropractic care and the risk of vertebrobasilar stroke: results of a case-control study in U.S. commercial and Medicare Advantage populations.

BACKGROUND: There is controversy surrounding the risk of manipulation, which is often used by chiropractors, with respect to its association with vertebrobasilar artery system (VBA) stroke. The objective of this study was to compare the associations between chiropractic care and VBA stroke with recent primary care physician (PCP) care and VBA stroke. METHODS: The study design was a case-control study of commercially insured and Medicare Advantage (MA) health plan members in the U.S. population between January 1, 2011 and December 31, 2013. Administrative data were used to identify exposures to chiropractic and PCP care. Separate analyses using conditional logistic regression were conducted for the commercially insured and the MA populations. The analysis of the commercial population was further stratified by age (<45 years; ≥45 years). Odds ratios were calculated to measure associations for different hazard periods. A secondary descriptive analysis was conducted to determine the relevance of using chiropractic visits as a proxy for exposure to manipulative treatment. RESULTS: There were a total of 1,829 VBA stroke cases (1,159 - commercial; 670 - MA). The findings showed no significant association between chiropractic visits and VBA stroke for either population or for samples stratified by age. In both commercial and MA populations, there was a significant association between PCP visits and VBA stroke incidence regardless of length of hazard period. The results were similar for age-stratified samples. The findings of the secondary analysis showed that chiropractic visits did not report the inclusion of manipulation in almost one third of stroke cases in the commercial population and in only 1 of 2 cases of the MA cohort. CONCLUSIONS: We found no significant association between exposure to chiropractic care and the risk of VBA stroke. We conclude that manipulation is an unlikely cause of VBA stroke. The positive association between PCP visits and VBA stroke is most likely due to patient decisions to seek care for the symptoms (headache and neck pain) of arterial dissection. We further conclude that using chiropractic visits as a measure of exposure to manipulation may result in unreliable estimates of the strength of association with the occurrence of VBA stroke.

Economic value of a cancer case management program.

PURPOSE: To assess the impact of the cancer support program (CSP), a telephonic case management program led by oncology nurses, on cancer-related medical costs and hospice use. METHODS: Members of large employer-funded health plans were referred to the CSP if they had a cancer diagnosis and met program criteria. Patients were referred to the CSP (July 2009-June 2011; index date is referral date) and chose to participate (participants) or not (nonparticipants). Inclusion required continuous coverage for ≥ 6 months preindex and ≥ 1 month postindex. Monthly cancer-related medical costs were estimated separately for survivors with active baseline cancer treatment and decedents. A sensitivity analysis of total cancer-related costs was conducted for the subset of patients (approximately 33%) with pharmacy data. Hospice use was determined for decedents. All outcomes were analyzed with generalized linear models adjusted for propensity score weights computed from patient baseline characteristics. RESULTS: A total of 7,455 survivors (3,255 CSP participants, 4,190 nonparticipants) and 1,388 decedents (736 CSP participant, 652 nonparticipants) were included. Participant monthly cancer-related medical costs were 9.8% lower for survivors over 6 months and 28.2% lower for decedents in the last month of life (P < .01). Cost savings were driven by lower inpatient costs for survivors (57.8% lower) and decedents (81.3% lower). The sensitivity analysis confirmed costs savings for survivors, but not decedents. Cumulative hospice days were higher for participants versus nonparticipants in the last month of life (participants, 16.4, nonparticipants, 12.8; P = .04). CONCLUSION: Self-selected participation in the cancer support program was associated with lower-cancer-related medical costs and greater hospice use.

Utilization of the propensity score method: an exploratory comparison of proxy-completed to self-completed responses in the Medicare Health Outcomes Survey.

BACKGROUND: This research examined the use of the propensity score method to compare proxy-completed responses to self-completed responses in the first three baseline cohorts of the Medicare Health Outcomes Survey, administered in 1998, 1999, and 2000, respectively. A proxy is someone other than the respondent who completes the survey for the respondent. METHODS: The propensity score method of matched sampling was used to compare proxy and self-completed responses. A propensity score is a value that equals the estimated probability of a given individual belonging to a treatment group given the observed background characteristics of that individual. Proxy and self-completed responses were compared on demographics, the SF-36, chronic conditions, activities of daily living, and depression-screening questions. For each individual survey respondent, logistic regression was used to calculate the probability that this individual belonged to the proxy respondent group (propensity score). Pre and post adjustment comparisons were tested by calculating effect sizes. RESULTS: Differences between self and proxy-completed responses were substantially reduced with the use of the propensity score method. However, differences were still found in the SF-36, several demographics, several impaired activities of daily living, several chronic conditions, and one depression-screening question. CONCLUSION: The propensity score method helped to reduce differences between proxy-completed and self-completed survey responses, thereby providing an approximation to a randomized controlled experiment of proxy-completed versus self-completed survey responses.