There has been an increasing interest for ranking of Swedish health care and a lot of emphasis has been placed on the creation of indicators in order to rank hospital units. However, essays on to what extent the choice of statistical method affects the final result of the ranking of health care units have not been given the same attention. For this particular reason, the main objective of this essay has been to investigate whether the choice of statistical model has a significant impact or not on the final result, by using five different, more or less common, statistical approaches: bar charts (with and without confidence intervals), control charts, logistic regression, multi-level analysis using shrunken residuals. The analyzed material in the essay comprises 24119 patients that all have been prescribed some form of the lipid-reducing medicine statin. According to directives given by Region Skåne, doctors are encouraged to prescribe a particular type of statin medicine, namely Simvastatin, which has been proved to be equally effective, but significantly cheaper than other statin medicines.

I och med den nya globala ekonomin blir det allt mer vanligt med en ökad konkurrens. Inte enbart från den inhemska marknaden utan även via en global marknad som öppnats genom ett samarbete mellan nationer i Europa. Därmed finns en större tendens från företagen att dra en offentlig upphandling inför det svenska rättssystemet och bestrida beslutet som fattats av den upphandlande myndigheten då varje upphandling blir viktig att vinna. En tydlig orsak till det ökande antalet överprövningar är att i och med en regression i den globala ekonomin och med kollapser av nationella ekonomier runt om i världen så finns det en ökad vinning i att överpröva en förlorad upphandling då dessa är bristvara vid lågkonjunktur. Genom detta examensarbete kommer uppsatsförfattarna att belysa de problem och grunder som finns för att en överprövning skall uppstå som till exempel den allt för korta granskningstiden av tilldelningsbeslut, en saknad kompetens för en upphandling och möjligtvis ett allt för konservativt arbetssätt i det svenska rättsväsendet.

In this study, the effects of using fine milled cassava stems as an additive in biofuel pellet production was compared to the effects of refined starch addition. The bulk biomass fuel raw material, to which the additive was added, was a blend of spruce and pine sawdust. An experimental design in the factors cassava/starch content, moisture content and material temperature was used. Measured responses were pellet bulk density, pellet durability, amount of fines, pelletizer motor current, pellet temperature, die temperature and CV for pelletizer motor current (a measure of process stability). Each response was modeled by multiple linear regression (MLR).

Cattle have a species specific movement pattern when lying down and getting up. They need sufficient space for their heads to perform these movements normally. The aim of this study was to investigate the lying down and getting up behaviour of beef bulls at a Swedish farm operation. The hypothesis was that bulls older than 10 months (over approximately 400 kg) were disturbed by a horizontal front rail and that the time to lie down and get up differed from what can be regarded as normal based on earlier scientific studies. The bulls were Swedish Red and White (SRB), Swedish Friesian (SLB) or crossbreeds of these two, and were kept in a cubicle system with a stall front design where there was a horizontal rail 40 cm above the stall floor.

The Sweden Democrats achieved great progress in the latest election in the Swedish municipals. The party is now closer than ever concerning reaching the Swedish parliament. This thesis examines the Sweden Democrats in the Swedish municipals with the aim to find out which municipal factors that led to their progress. By looking at the percentage share of unemployment, the percentage share of foreigners, the percentage share of education, average income, traditional political colour, average age, criminality, early representation of a party hostile to foreigners, the municipal type and the sickliness in the municipals I find out which factors explain the progress of the Sweden Democrats. The thesis is an empirical quantitative study build on statistics by the help of regression analysis and diagrams.

Syftet med uppsatsen är att undersöka om de veckoeffekter och veckodagseffekter som observerats såväl internationellt som i Sverige även kan observeras på den svenska valutamarknaden för de tre valutorna; US-dollarn, euron och det brittiska pundet. Uppsatsen utgår ifrån den kvantitativa metoden med en deduktiv ansats. För att uppfylla uppsatsens syfte har den multipla regressionsmodellen med tillhörande dummyvariabler och hypotestester samt en variansanalys använts. Två undersökningar har genomförts, en med veckoindelning och en annan med veckodagsindelning. Uppsatsen utgår huvudsakligen från teorin om den effektiva marknadshypotesen (EMH).

This study deals with the road freight sector's capital structure and how leases, loans and equity affect the ratios. The study is based on a ten-year period between 2000-2010 in Sweden. Investments in finance is a complex and interesting subject to study, there are many factors that can affect how the company best choose their investments when they have many great business investment the decisions plays a greater role. The aim is to find an optimal capital structure from a financial investment point of view. The purpose will be answered by the following research question: Are there significant differences between leases, loans and equity financed fleet of factors, profitability, tax, turnover, age, and cyclicality. The study will also examine how debt is related to profit margin, DuPont and the tax, all through a regression analysis. Then were plausible economic theories for the study.

Nutrient enrichment is the main cause of the increasing eutrophication process in the Baltic Sea during last century. A prerequisite counteract this process the load of nutrients to the Sea must be investigated. The large contribution of nutrients to the Sea is caused by emission from the rivers within the drainage basin. For the total emission of nutrient into the Sea the retention process in the rivers has big influence. This process in the river system has been assumed as a not important part of the nutrient cycle.

Recent studies made by Margaritis and Psillaki,have shown that a lower debt ratio and higher efficiency are correlated in their studies performed oncompanies in New Zeeland. Other researchers have been able to show a connection between other industries than the one used in our studies,among these are Titman and Wessler. These studies have been done with a great selection of companies in different industries and time periods. However most of these researchers have used traditional ratios and variables.This study aims to find and analyze connections between returns and lower debt ratios in real estate companies listed on the Stockholm stock exchange. Instead of the traditional debt-equity ratio we will construct our own taking long term debts and property assets.

According to Food and Agriculture Organization newsprint is defined as: Uncoated paper, unsized (or only slightly sized), containing at least 60 percent of mechanical wood pulp. The consumption of newsprint in Sweden was just over 798 000 tonnes in 2009, which represents approximately 90 kg per person. Although there are studies that predict a drastic reduction in newsprint consumption in the Western world, there seems to be a clear difference between forecasts for the future given by statistical analysis of newsprint consumption and forecasts given by experts in the industry. The former predict a continuing increase while the experts see a coming decrease in consumption.In this report, both demand and business strategies of newsprint in Sweden are studied. The study also presents a forecast of the future which is based on historical data and qualitative interviews.

En gatas geometriska utformning är av betydelse för de val vi gör längs en sträcka.Det kanske viktigaste valet är hastighet, vilket är nära kopplat till olyckor och kan påverka en känsla av otrygghet längs gatunätet. Dimensioneringsfaktorerna på det vägnät vi har idag skiljer sig vitt åt, genom varierade gatubredder och korsningsavstånd men även olika högsta tillåtna hastigheter för vägar med samma dimensionering. Hastigheter påverkar människor både direkt och indirekt, och kan ge upphov till mycket svåra skador för den enskilda. I ?Nollvisionen? anges långsiktiga mål som eftersträvas vid svensk transportplanering.

Background: During extreme market conditions like the period during fall 2008 the discussion of what affects company value becomes apparent. The capital structure is the relation between borrowed capital and equity in a company´s financing mix. What impact changes in capital structure have on company value is a widely debated subject within the theory of finance. If a relationship between capital structure and company value exists the implication is that an optimal capital structure where company value is maximized also exists.Aim: The aim of the thesis is to study whether a certain relationship between capital structure and company value exists among selected stocks and companies listed on Stockholmsbörsens OMXS30.Implementation: With aim to fulfill the purpose of the thesis regression analysis has been performed among chosen stocks and companies. The empirical results eventuating from this have been analyzed from the view of elected relevant theory.Completion and results: We find that during normal market conditions a positive relationship between debt ratio and enterprise value (EV) can be established.

Purpose: The purpose of this study is to investigate possible links between short selling and the stock market movements using econometric test models. Methodology: A quantitative study carried out on the time series stock lending and OMX Stockholm 30 index. Information is gathered through qualitative interviews with specialists in the field of stock lending, and studies of relevant newspaper articles and reports. Theoretical approach: The theoretical frame of reference is a further consideration of supply and demand theory. The empirical study is implemented by the simple linear regression model and a vector autoregressive model (VAR).

In the latest edition of NRC (2007) the feeding recommendations for Ca and P to growing horses were increased with 35 and 25 %, respectively, based on results from a Canadian study showing that daily endogenous fecal losses of Ca and P were greater than previously suggested. A Ca absorption efficiency of 50 % is used for all horses. However, the true absorption efficiency might be as high as 70 % in young horses. P absorption efficiency is assumed to be higher for growing horses because their diets are often supplemented with inorganic P. Thus, an efficiency of 45 % is used for growing horses as compared to 35 % for mature horses.

SYFTE: Syftet med detta arbete är att undersöka det eventuella sambandet mellan de utvalda ländernas ränteförändringar och ränteförändringar i Sverige. Vi undersöker även om det går att påvisa om något eller några av ländernas räntor påverkar räntorna i Sverige. Vidare är syftet att ta reda på vilken inverkan de utvalda EMU-länderna har på den svenska räntan. Vi undersöker även hur volatiliteten ser ut för ränteförändringarna i de olika länderna jämfört med ränteförändringarna i Sverige. METOD: Vi har i vår uppsats använt oss av en kvantitativ metod med komparativ design.