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- Petrén, Sofia, et al.
(författare)
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Early correction of posterior crossbite : a cost-minimization analysis
- 2013
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Ingår i: European Journal of Orthodontics. - : Oxford University Press. - 0141-5387 .- 1460-2210. ; 35:1, s. 14-21
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Tidskriftsartikel (refereegranskat)abstract
- There are few cost evaluation studies of orthodontic treatment. The aim of this study was to determine the costs of correcting posterior crossbites with Quad Helix (QH) or expansion plates (EPs) and to relate the costs to the effects. To determine which alternative has the lower cost, a cost-minimization analysis was undertaken, based on that the outcome of the treatment alternatives is identical. The study comprised 40 subjects in the mixed dentition, who had undergone treatment for unilateral posterior crossbite: 20 with QH and 20 with EPs. Duration of treatment, number of appointments, broken appointments, and cancellations were registered. Direct costs (for the premises, staff salaries, material and laboratory costs) and indirect costs (loss of income due to parent's assumed absence from work) were calculated and evaluated for successful treatment alone, for successful and unsuccessful treatment and re-treatment when required. The QH had significantly lower direct and indirect costs, with fewer failures requiring re-treatment. Even the costs for successful cases only were significantly lower in the QH than in the EP group. The results clearly show that in terms of cost-minimization, QH is the preferred method for correcting posterior crossbite in the mixed dentition.
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- Allander, Susanne Vilhelmsdotter, et al.
(författare)
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Kreatinin fortfarande den vanligaste njurfunktionsanalysen : Undersökning av praxis i Sverige
- 2012
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Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 109:19, s. 960-962
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Tidskriftsartikel (refereegranskat)abstract
- Markers of renal function (glomerular filtration rate; GFR) are frequently used. In most cases GFR is estimated based on plasma creatinine, but cystatin C, creatinine clearance (with urine collection), iohexol clearance and 51Cr-EDTA clearance are also used. A questionnaire was sent to representatives for clinical chemistry laboratories in Sweden to collect information regarding the use of these markers during the years 2006 2009. The aim was to compare the use in different parts of Sweden and how it has changed over time. The overall use of markers of renal function, including creatinine, continues to increase on a national level, with the exception for endogenous creatinine clearance and 51Cr-EDTA clearance. Creatinine, the most frequently used marker, continues to grow in numbers. 5,6 million creatinine analyses and about two hundred thousand cystatin C analyses were performed during year 2009. There were considerable variations between counties in the use of the studied markers.
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- Vilhelmsdotter Allander, Susanne, et al.
(författare)
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Regional variation in use of exogenous and endogenous glomerular filtration rate (GFR) markers in Sweden
- 2012
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Ingår i: Upsala Journal of Medical Sciences. - : Uppsala Medical Society. - 0300-9734 .- 2000-1967. ; 117:3, s. 273-278
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Tidskriftsartikel (refereegranskat)abstract
- Background.Markers of renal function (glomerular filtration rate (GFR)) are frequently used in the Swedish health care. GFR is usually estimated based on plasma creatinine concentration, but plasma cystatin C concentration, creatinine clearance, iohexol clearance, and 51Cr-EDTA clearance are also used. These markers are all part of the daily patient care, but there is little specific information on the clinical use of these markers. The aim of this study was to compare the use of these various GFR markers in different parts of Sweden and potential changes over time.Methods. Retrospective study using questionnaires to collect information for the years 2006-2009 divided per county on the specific use of GFR markers with type of test reports.Results. Plasma/serum creatinine concentration (96%) is by far the dominating GFR marker in Sweden, while cystatin C concentration (3.5%), creatinine clearance (0.1%), iohexol clearance (0.1%), and 51Cr-EDTA clearance (0.1%) are less frequently used. The use of GFR markers, including creatinine, continues to increase on a national level with the exception of creatinine clearance and 51Cr-EDTA clearance. There were considerable variations between different counties in the use of GFR markers and the type of test reports that the laboratories provided.Conclusions.The inter-county variations of GFR markers used in Sweden are large and indicate that savings associated with optimized test utilization in this regard could be substantial. Regional habits and traditions are likely to influence the variations in GFR marker use.
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