Good jobs, bad jobs and redistribution

We analyse the question of optimal taxation in a dual economy, when the government is concerned about the distribution of labour income. Income inequality is caused by the presence of sunk capital investments, which creates a .good jobs. sector due to the capture of quasi-rents by trade unions. We find that whether the government should subsidise or tax investments is crucially dependent on union bargaining strength. If unions are weak, the optimal tax policy implies a combination of investment taxes and progressive income taxation. On the other hand, if unions are strong, we find that the best option for the government is to use investment subsidies in combination with either progressive or proportional taxation, the latter being the optimal policy if the government is not too concerned about inequality and if the cost of income taxation is sufficiently high. -- In dem Beitrag wird die Frage der optimalen Besteuerung in einer Wirtschaft mit zwei Sektoren untersucht, in der die Regierung an der Verteilung des Arbeitseinkommens interessiert ist. Einkommensungleichheit wird dann durch versunkene Kapitalinvestitionen verursacht, die einen Sektor mit .guten. Arbeitsplätzen schaffen, der durch die Aneignung von Quasi-Renten durch Gewerkschaften entsteht. Ob die Regierung Investitionen subventionieren oder besteuern soll, hängt entscheidend von der Verhandlungsst ärke der Gewerkschaften ab. Wenn die Gewerkschaften schwach sind, dann sieht die optimale Steuerpolitik eine Kombination aus Investitionssteuern und progressiver Einkommensbesteuerung vor. Im Falle von starken Gewerkschaften zeigt sich, daß die beste Handlungsalternative für die Regierung aus dem Einsatz von Subventionen in Kombination mit entweder progressiver oder proportionaler Besteuerung besteht, wobei die letztere dann optimal ist, wenn die Regierung nicht zu sehr an Ungleichheit interessiert ist und wenn die Kosten der Einkommensbesteuerung hinreichend hoch sind.Rent sharing,segmented labour markets,optimal taxation,redistribution

National pricing with local quality competition

We study the incentives of national retail chains to adopt national (uniform) prices across local markets that differ in size and competition intensity. In addition to price, the chains may also compete along a quality dimension, and quality is always set locally. We show that absent quality competition, the chains will never use national pricing. However, if quality competition is sufficiently strong there exist equilibria where at least one of the chains adopts national pricing. We also identify cases in which national pricing benefits (harms) all consumers, even in markets where such a pricing strategy leads to higher (lower) prices.Fundação para a Ciência e Tecnologia (FCT

Merger control in retail markets with national pricing

We analyze theoretically the efficiency of structural remedies in merger control in retail markets and show that this crucially depends on the retail chains´pricing policy. Whereas a retail merger can be perfectly remedied by divestiture of stores under local pricing, such remedies are not only less effective, but might even be counterproductive, if the chains set national prices. Paradoxically, such remedies might be even more counterproductive if the chains also compete locally along non-price dimensions such as quality. Our analysis suggests that antitrust authorities should be very cautious when reviewing structural remedies in retail markets with national pricing

National pricing with local quality competition

We study the incentives of national retail chains to adopt national (uniform) prices across local markets that differ in size and competition intensity. In addition to price, the chains may also compete along a quality dimension, and quality is always set locally. We show that absent quality competition, the chains will never use national pricing. However, if quality competition is sufficiently strong there exist equilibria where at least one of the chains adopts national pricing. We also identify cases in which national pricing benefits (harms) all consumers, even in markets where such a pricing strategy leads to higher (lower) prices.publishedVersio

Can vitamin D3 supplementation prevent bone loss in persons with MS? A placebo-controlled trial

Multiple sclerosis (MS) is a possible cause of secondary osteoporosis. In this phase II trial we assessed whether a weekly dose of 20,000 IU vitamin D3 prevents bone loss in ambulatory persons with MS age 18–50 years. ClinicalTrials.gov ID NCT00785473. All patients managed at the University Hospital of North Norway who fulfilled the main inclusion criteria were invited to participate in this double-blinded trial. Participants were randomised to receive 20,000 IU vitamin D3 or placebo once a week and 500 mg calcium daily for 96 weeks. The primary outcome was the effect of the intervention on percentage change in bone mineral density (BMD) at the hip, the spine, and the ultradistal radius over the study period. Of 71 participants randomised, 68 completed. Mean serum 25-hydroxyvitamin D [25(OH)D] levels in the intervention group increased from 55 nmol/L at baseline to 123 nmol/L at week 96. After 96 weeks, percentage change in BMD did not differ between groups at any site. BMD decreased at the hip, by 1.4% in the placebo group (95% CI −2.3 to −0.4, SD 2.7, p = 0.006) and by 0.7% in the treatment group (−1.6 to 0.2, 2.7, p = 0.118), difference 0.7% (−1.9 to 0.7, p = 0.332). Findings were not altered by adjustment for sex or serum 25(OH)D. Supplementation with 20,000 IU vitamin D3 a week did not prevent bone loss in this small population. Larger studies are warranted to assess the effect of vitamin D on bone health in persons with MS

Smartbygg-teknologi: fremtidens sykepleierassistent?

Formålet med denne oppgaven var å undersøke hvordan forhold som teknologi og arbeidsmiljø kan påvirke effektiviteten blant sykepleiere på Haukeland Universitetssykehus. Vi ønsket å ta for oss arbeidshverdagen til en sykepleier og videre kartlegge hvilke tidstyver og utfordringer som kan erstattes eller effektiviseres ved bruk av teknologiske hjelpemidler. Vårt overordnede teoretiske utgangspunkt fokuserer på smartbygg-teknologi, sensorteknologi og velferdsteknologi. Vi har i den forbindelse tatt utgangspunkt i eksisterende teorier og forskning ved hjelp av artikler, oppgaver og undersøkelser. Vi har valgt å benytte oss av en forskningsprosess hvor vi kombinerer en kvalitativ og en kvantitativ undersøkelse. Dette fordi vi hadde lite bakgrunnsinformasjon til å begynne med og ønsket å benytte en fokusgruppe i et kvalitativt intervju, før vi gikk i gang med den kvantitative spørreundersøkelsen. På denne måten fikk vi noen erfaringer som vi kunne utnytte i utformingen av spørreundersøkelsen, som igjen førte til bedre og mer relevant data. Resultatene fra undersøkelsene våre viser at respondentene i stor grad er fornøyd med arbeidsmiljøet sitt, men at det også er sterk enighet om at der finnes forbedringsmuligheter. De er alle enige om at Haukeland Universitetssykehus ligger langt fremme når det gjelder teknologi for pasientbehandling, men at det er større mangler og utfordringer når det gjelder arbeidshverdagen for øvrig. Som følge av Covid-19 har vi ikke fått det antallet respondenter vi ønsket til den kvantitative undersøkelsen vår, og kan således ikke være skråsikre på at våre konklusjoner og funn er representative for den totale populasjonen

Personality factors predict sleep-related shift work tolerance in different shifts at 2-year follow-up: a prospective study

Objectives: The aim of the present study was to investigate whether the personality variables morningness, flexibility, languidity and hardiness could predict sleep-related shift work tolerance for the day, evening and night shifts, respectively. Design: Prospective study design with questionnaires administered in winter 2008/2009 (wave 1) and 2 years later in spring 2011 (wave 3). Setting: Different healthcare institutions in Norway. Participants: The sample comprised in all 700 nurses working a three-shift rotating schedule. Primary and secondary outcome measures: The personality variables were assessed at wave 1, as were the demographic, lifestyle and work-related variables. Sleep-related shift work tolerance, assessed at wave 3, was measured separately for the day, evening and night shifts with the Bergen Shift Work Sleep Questionnaire. Results: Morningness was positively associated with sleep-related day shift tolerance (p<0.001). Flexibility was positively associated with sleep-related tolerance for the evening as well as night shift (p<0.001). Furthermore, languidity was negatively associated with sleep-related shift tolerance for the day, evening and night shifts (p<0.001, <0.01, <0.05, respectively). Hardiness was positively associated with sleep-related tolerance for the day, evening and night shifts (p<0.001, <0.01, <0.05, respectively). Age was negatively associated with sleeprelated shift tolerance for the day, night (p<0.01) and evening shifts (p<0.001). Conclusions: The findings indicate that hardiness and languidity predict sleep-related shift work tolerance across all shift types among shift working nurses. The effects of flexibility and morningness seem to depend on the shift schedule. By and large, our results are in accordance with previous studies; however, we have now demonstrated the prospective importance of personality in relation to sleep-related shift work tolerance across different shifts.publishedVersio

Recruitment methods in Alzheimer's disease research: general practice versus population based screening by mail

<p>Abstract</p> <p>Background</p> <p>In Alzheimer's disease (AD) research patients are usually recruited from clinical practice, memory clinics or nursing homes. Lack of standardised inclusion and diagnostic criteria is a major concern in current AD studies. The aim of the study was to explore whether patient characteristics differ between study samples recruited from general practice and from a population based screening by mail within the same geographic areas in rural Northern Norway.</p> <p>Methods</p> <p>An interventional study in nine municipalities with 70000 inhabitants was designed. Patients were recruited from general practice or by population based screening of cognitive function by mail. We sent a questionnaire to 11807 individuals ≥ 65 years of age of whom 3767 responded. Among these, 438 individuals whose answers raised a suspicion of cognitive impairment were invited to an extended cognitive and clinical examination. Descriptive statistics, chi-square, independent sample t-test and analyses of covariance adjusted for possible confounders were used.</p> <p>Results</p> <p>The final study samples included 100 patients recruited by screening and 87 from general practice. Screening through mail recruited younger and more self-reliant male patients with a higher MMSE sum score, whereas older women with more severe cognitive impairment were recruited from general practice. Adjustment for age did not alter the statistically significant differences of cognitive function, self-reliance and gender distribution between patients recruited by screening and from general practice.</p> <p>Conclusions</p> <p>Different recruitment procedures of individuals with cognitive impairment provided study samples with different demographic characteristics. Initial cognitive screening by mail, preceding extended cognitive testing and clinical examination may be a suitable recruitment strategy in studies of early stage AD.</p> <p>Clinical Registration</p> <p>ClinicalTrial.gov Identifier: NCT00443014</p

Co-morbidity and drug treatment in Alzheimer's disease. A cross sectional study of participants in the Dementia Study in Northern Norway

Inappropriate medical treatment of co-morbidities in Alzheimer’s disease (AD) is an increasing concern in geriatric medicine. The objective of this study was to compare current drug use related to co-morbidity between individuals with a recent diagnosis of AD and a cognitively healthy control group in a population based clinical trial in Northern Norway. Setting: Nine rural municipalities with 70 000 inhabitants in Northern Norway. Participants: Participants with and without AD recruited in general practice and by population based screening. 187 participants with a recent diagnosis of AD were recruited among community dwellers. Of 791 respondents without cognitive symptoms, 500 were randomly selected and invited to further clinical and cognitive testing. The final control group consisted of 200 cognitively healthy individuals from the same municipalities. Demographic characteristics, data on medical history and current medication were included, and a physical and cognitive examination was performed. The statistical analyses were carried out by independent sample t-test, chi-square, ANCOVA and logistic regression. A co-morbidity score was significantly higher in AD participants compared to controls. The mean number of drugs was higher for AD participants compared to controls (5.1 ± 3.6 and 2.9 ± 2.4 respectively, p < 0.001 age and gender adjusted), also when adjusted for co-morbidity. AD participants used significantly more anticholinergic, sedative and antidepressant drugs. For nursing home residents with AD the mean number of drugs was significantly higher compared to AD participants living at home (6.9 ± 3.9 and 4.5 ± 3.3, respectively, p < 0.001). AD participants were treated with a significantly higher number of drugs as compared to cognitively healthy controls, even after adjustment for co-morbidity. An inappropriate use of anticholinergic and sedative drugs was identified, especially among nursing home residents with AD. The drug burden and the increased risk of adverse reactions among individuals suffering from AD need more attention from prescribing doctors