Steven Habbous
University of Western Ontario
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Featured researches published by Steven Habbous.
Nephrology Dialysis Transplantation | 2016
Steven Habbous; Sebastian Przech; Rey Acedillo; Sisira Sarma; Amit X. Garg; Janet Martin
Background. It remains unclear which phosphate binders should be preferred for hyperphosphatemia management in chronic kidney disease (CKD). Methods. We performed a systematic review and meta-analysis of randomized trials comparing sevelamer or lanthanum with other phosphate binders in CKD. Results. Fifty-one trials (8829 patients) were reviewed. Compared with calcium-based binders, all-cause mortality was nonsignificantly lower with sevelamer {risk ratio [RR] 0.62 [95% confidence interval (CI) 0.35–1.08]} and lanthanum [RR 0.73 (95% CI 0.18–3.00)], but risk of bias was concerning. Compared with calcium-based binders, sevelamer reduced the risk of hypercalcemia [RR 0.27 (95% CI 0.17–0.42)], as did lanthanum [RR 0.12 (95% CI 0.05–0.32)]. Sevelamer reduced hospitalizations [RR 0.50 (95% CI 0.31–0.81)], but not lanthanum [RR 0.80 (95% CI 0.34–1.93)]. The presence/absence of other clinically relevant outcomes was infrequently reported. Compared with calcium-based binders, sevelamer reduced serum calcium, low-density lipoprotein and coronary artery calcification, but increased intact parathyroid hormone. The clinical relevance of these changes is unknown since corresponding clinical outcomes were not reported. Lanthanum had less favorable impact on biochemical parameters. Sevelamer hydrochloride and sevelamer carbonate were similar in three studies. Sevelamer was similar to lanthanum (three studies) and iron-based binders (three studies). Conclusion. Sevelamer was associated with a nonsignificant reduction in mortality and significantly lower hospitalization rates and hypercalcemia compared with calcium-based binders. However, differences in important outcomes, such as cardiac events, fractures, calciphylaxis, hyperchloremic acidosis and health-related quality of life remain understudied. Lanthanum and iron-based binders did not show superiority for any clinically relevant outcomes. Future studies that fail to measure clinically important outcomes (the reason why phosphate binders are prescribed in the first place) will be wasteful.
Current Transplantation Reports | 2018
Steven Habbous; Amit X. Garg; Ngan N. Lam
Purpose of ReviewAn inefficient living donor candidate evaluation process can be a barrier to timely living donor transplantation and optimal donor satisfaction. In this review, we examine the inefficiencies of the living kidney donor evaluation and make recommendations to optimize this process.Recent FindingsThere is increasing awareness that the living donor evaluation process is inefficient, but little research has been done to date. The time to complete the evaluation can be several or even many months. Avoidable delays can lead to dialysis initiation for pre-emptive transplant candidates, lengthen dialysis time for those patients on dialysis, and reduce donor satisfaction. Opportunities to improve efficiency include the choice, timing, sequencing of evaluation tests, procedures and consults, use of navigators, and monitoring of evaluation timeliness as a quality metric.SummaryA more efficient evaluation is expected to result in better health outcomes for patients with kidney failure and incur substantial cost savings to the healthcare system.
American Journal of Transplantation | 2018
Steven Habbous; Eric McArthur; Sisira Sarma; Mehmet A. Begen; Ngan N. Lam; Braden J. Manns; Krista L. Lentine; Christine Dipchand; Kenneth Litchfield; Susan McKenzie; Amit X. Garg
Living donor kidney transplantation is the most promising way to avoid or minimize the amount of time a recipient spends on dialysis before transplantation. We studied 887 living kidney donors at 5 transplant centers in Ontario, Canada, who started their evaluation and donated between April 2006 and March 2014. Using a series of hypothetical scenarios, we estimated the impact of an earlier living donor evaluation completion and donation on the number pre‐emptive transplants, the time spent on dialysis, healthcare cost savings from averted dialysis costs (CAD
Value in Health | 2017
Steven Habbous; Sebastian Przech; Janet Martin; Amit X. Garg; Sisira Sarma
2016), and the number of additional transplants. During the study period, if the donor transplants occurred 3 months earlier, the healthcare system would save on average
Transplantation | 2018
Steven Habbous; Eric McArthur; Stephanie N. Dixon; Susan McKenzie; Carlos Garcia-Ochoa; Ngan N. Lam; Krista L. Lentine; Christine Dipchand; Kenneth Litchfield; Mehmet A. Begen; Sisira Sarma; Amit X. Garg
12 055 (standard deviation [SD]
American Journal of Kidney Diseases | 2018
Steven Habbous; Jennifer Arnold; Mehmet A. Begen; Neil Boudville; Matthew Cooper; Christine Dipchand; Stephanie N. Dixon; Liane S. Feldman; Dariusz Goździk; Martin Karpinski; Scott Klarenbach; Greg Knoll; Ngan N. Lam; Krista L. Lentine; Charmaine Lok; Eric McArthur; Susan McKenzie; Matthew Miller; Mauricio Monroy-Cuadros; Chris Nguan; G. V. Ramesh Prasad; Sebastian Przech; Sisira Sarma; Dorry L. Segev; Leroy Storsley; Amit X. Garg; Darin Treleavan; Joseph Kim; Charmine Lok; Ann Bugeja
13 594) per recipient; 21 recipients could have avoided dialysis altogether, and 57 additional transplants (a 26% increase) could have occurred each year. For the 220 living kidney donor transplants performed in Ontario, Canada, each year, this translates to a total annual cost savings of
Transplantation direct | 2018
Steven Habbous; Justin Woo; Ngan N. Lam; Krista L. Lentine; Matthew Cooper; Marian Reich; Amit X. Garg
2.7M. In conclusion, a more timely evaluation of living donor candidates and their intended recipients may increase the supply of kidneys for transplantation. Improved evaluation efficiency may also yield more pre‐emptive transplants and substantial healthcare cost savings through averted dialysis costs.
Transplantation | 2018
Steven Habbous; Sisira Sarma; Lianne Barnieh; Eric McArthur; Scott Klarenbach; Braden J. Manns; Mehmet A. Begen; Krista L. Lentine; Amit X. Garg
BACKGROUND Phosphate binders are used to treat hyperphosphatemia among patients with chronic kidney disease (CKD). OBJECTIVES To conduct an economic evaluation comparing calcium-free binders sevelamer and lanthanum with calcium-based binders for patients with CKD. METHODS Effectiveness data were obtained from a recent meta-analysis of randomized trials. Effectiveness was measured as life-years gained and translated to quality-adjusted life-years (QALYs) using utility weights from the literature. A Markov model consisting of non-dialysis-dependent (NDD)-CKD, dialysis-dependent (DD)-CKD, and death was developed to estimate the incremental costs and effects of sevelamer and lanthanum versus those of calcium-based binders. A lifetime horizon was used and both costs and effects were discounted at 1.5%. All costs are presented in 2015 Canadian dollars from the Canadian public payer perspective. Results of probabilistic sensitivity analysis were presented using cost-effectiveness acceptability curves. Sensitivity analyses were conducted for risk pooling methods, omission of dialysis costs, and persistence of drug effects on mortality. RESULTS Sevelamer resulted in an incremental cost-effectiveness ratio of
International Urology and Nephrology | 2016
Steven Habbous; Amit X. Garg; Janet Martin
106,522/QALY for NDD-CKD and
Obstetrical & Gynecological Survey | 2015
Amit X. Garg; Immaculate Nevis; Eric McArthur; Jessica M. Sontrop; John J. Koval; Ngan N. Lam; Ainslie M. Hildebrand; Peter P. Reese; Leroy Storsley; John S. Gill; Dorry L. Segev; Steven Habbous; Ann Bugeja; Greg Knoll; Christine Dipchand; Mauricio Monroy-Cuadros; Krista L. Lentine
133,847/QALY for DD-CKD cohorts. Excluding dialysis costs, sevelamer was cost-effective in the NDD-CKD cohort (