Manipulation via information in large elections

Cataloged from PDF version of article.This thesis studies manipulations of equilibria by candidates in two-alternative elections along with their effects on voter turnout, winner of the election and social welfare where voters have common values, and both voting and manipulating are costly. We show that manipulation is not desirable for the society, and the candidates’ incentives for manipulating can be mitigated by appropriately sequencing the order of manipulations. We present some results of a manipulation game which may rather unexpected under the assumption that the candidates have prior beliefs about each others’ manipulations. Finally we determine the set of manipulations which can be prevented by informed voters for a given composition of society.Sezer, İlhanM.S

Familial Mediterranean fever: Health-related quality of life and associated variables in a national cohort

Objectives: This study aims to evaluate the effectivity of Familial Mediterranean Fever Quality of Life (FMF-QoL) Scale for the measurement of QoL in patients with FMF and to perform correlations between related clinical variables in Turkish patients. Patients and methods: This multicenter prospective study performed between December 2017 and November 2018 included 974 FMF patients (334 males, 640 females; median age: 35; range, 26 to 45 years). Sociodemographic characteristics and clinical features were recorded. All participants were asked to complete the FMF-QoL Scale, Short Form-36 (SF-36), Hospital Anxiety and Depression Scale (HADS), Health Assessment Questionnaire (HAQ), and Functional Assessment of Chronic Illness Therapy (FACIT) Scale. Results: The median FMF-QoL Scale score was 26. Higher FMF-QoL Scale scores were shown to be related to female sex, illiteracy or primary education, monthly low-income (US$20 years), a higher number of attacks per month (>1/month), and severe disease. FMF-QoL Scale scores were correlated negatively with subscales of SF-36, and positively with HADS-anxiety and HADS-depression scores, HAQ and FACIT. Conclusion: Female sex, smoking, lower educational status, more severe disease, fatigue, and functional impairment were associated with poor QoL. FMF-QoL Scale was noted as a valid and simple patient-reported outcome instrument and correlated with the SF-36 scale

Atrasentan and renal events in patients with type 2 diabetes and chronic kidney disease (SONAR): a double-blind, randomised, placebo-controlled trial

Background: Short-term treatment for people with type 2 diabetes using a low dose of the selective endothelin A receptor antagonist atrasentan reduces albuminuria without causing significant sodium retention. We report the long-term effects of treatment with atrasentan on major renal outcomes. Methods: We did this double-blind, randomised, placebo-controlled trial at 689 sites in 41 countries. We enrolled adults aged 18–85 years with type 2 diabetes, estimated glomerular filtration rate (eGFR)25–75 mL/min per 1·73 m 2 of body surface area, and a urine albumin-to-creatinine ratio (UACR)of 300–5000 mg/g who had received maximum labelled or tolerated renin–angiotensin system inhibition for at least 4 weeks. Participants were given atrasentan 0·75 mg orally daily during an enrichment period before random group assignment. Those with a UACR decrease of at least 30% with no substantial fluid retention during the enrichment period (responders)were included in the double-blind treatment period. Responders were randomly assigned to receive either atrasentan 0·75 mg orally daily or placebo. All patients and investigators were masked to treatment assignment. The primary endpoint was a composite of doubling of serum creatinine (sustained for ≥30 days)or end-stage kidney disease (eGFR <15 mL/min per 1·73 m 2 sustained for ≥90 days, chronic dialysis for ≥90 days, kidney transplantation, or death from kidney failure)in the intention-to-treat population of all responders. Safety was assessed in all patients who received at least one dose of their assigned study treatment. The study is registered with ClinicalTrials.gov, number NCT01858532. Findings: Between May 17, 2013, and July 13, 2017, 11 087 patients were screened; 5117 entered the enrichment period, and 4711 completed the enrichment period. Of these, 2648 patients were responders and were randomly assigned to the atrasentan group (n=1325)or placebo group (n=1323). Median follow-up was 2·2 years (IQR 1·4–2·9). 79 (6·0%)of 1325 patients in the atrasentan group and 105 (7·9%)of 1323 in the placebo group had a primary composite renal endpoint event (hazard ratio [HR]0·65 [95% CI 0·49–0·88]; p=0·0047). Fluid retention and anaemia adverse events, which have been previously attributed to endothelin receptor antagonists, were more frequent in the atrasentan group than in the placebo group. Hospital admission for heart failure occurred in 47 (3·5%)of 1325 patients in the atrasentan group and 34 (2·6%)of 1323 patients in the placebo group (HR 1·33 [95% CI 0·85–2·07]; p=0·208). 58 (4·4%)patients in the atrasentan group and 52 (3·9%)in the placebo group died (HR 1·09 [95% CI 0·75–1·59]; p=0·65). Interpretation: Atrasentan reduced the risk of renal events in patients with diabetes and chronic kidney disease who were selected to optimise efficacy and safety. These data support a potential role for selective endothelin receptor antagonists in protecting renal function in patients with type 2 diabetes at high risk of developing end-stage kidney disease. Funding: AbbVie

Essays on Political Economy

This collection of essays investigates issues related to elections and wars. In the first essay, we present an auction-type model of war and characterize its unique equilibrium. We offer three different explanations for the causes of wars. First, as an individual-level explanation of war, we show that wars occur due to information asymmetry between governments. Second, as a societal-level explanation of war, we show that countries have smaller armies, they fight less severe wars, and their citizens are better off in a democratic world than in an autocratic world. Finally, as a systemic-level explanation of war, we show that wars will completely disappear when one of the countries has absolute superiority in military technology. In the second essay, we examine the impact of positive altruism, that is, voting for a candidate to please voters who prefer the same candidate, on policy choices of strategic candidates. We establish the existence of equilibrium consistent with Duverger's Law and polarization. We show that this equilibrium is unique. Moreover, our model offers a theoretical basis for the decrease in turnout and increase in polarization observed in the U.S. after the $1960$s. We also consider negative altruism, that is, voting for a candidate to anger voters who dislike the candidate, and show that it is qualitatively similar to positive altruism in terms of its effects on candidates, that is, the equilibria are consistent with Duverger's Law and polarization. In the final essay, we offer an explanation to `policy convergence' in Downsian models of two-party systems with unidimensional policy space and to `paradox of voting' in large elections. In our model, voters vote to improve the lives of their fellow voters. Candidates are office motivated. They try to increase voter support and energize their base to win the election. The incentive to increase their voter support pushes candidates towards each other, while the incentive to energize their bases pulls them apart. We examine the trade-off between these two incentives and establish the existence of a unique equilibrium in which candidates diverge from each other and voters vote in high proportions

Can the Second to Fourth Digit Ratio (2D : 4D) Be a Marker to Determine Ankylosing Spondylitis Disease Activity?

Objective. The length ratio of the index finger (2D) to the ring finger (4D) (2D : 4D ratio) is considered a biomarker of prenatal sex hormone exposure. The 2D : 4D ratio is influenced by prenatal androgen and estrogen levels. Because ankylosing spondylitis (AS) influences men more frequently and severely than women, androgens are proposed to be related to AS pathogenesis. Estrogens have immune-modulating effects and reduce AS disease activity. The aim of this study was to assess the relationship between 2D : 4D ratio and AS disease activity. Material and Methods. In this study, 167 (43 female) patients diagnosed with AS were studied. The lengths of the second and fourth fingers were measured using a digital caliper. The 2D : 4D ratio was found by dividing the length of the second finger by the length of the fourth finger. AS disease activity was assessed with the Turkish version of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). AS functional status was assessed with Bath Ankylosing Spondylitis Functional Index (BASFI). L-Schober, tragus to wall distance, finger to floor distance, and chest expansion were used to evaluate mobility. Results. In female patients, the right hand 2D : 4D ratios were higher than those in male patients. Biologic drug use was more frequent in males. The BASDAI scores were higher in female patients than in male patients. There were significant negative correlations between right and left hand 2D : 4D ratio and BASFI and BASDAI in female patients. There was no significant correlation between the 2D : 4D ratio and BASFI or BASDAI in male patients. We found a positive correlation between L-Schober and right hand 2D : 4D and a negative correlation between the left hand 2D : 4D ratio and finger to floor distance in female patients with AS. Conclusion. The 2D : 4D ratio of the right and left hand was low in female patients with high BASFI and BASDAI and low spinal mobility (L-Schober) was also linked to low female 2D : 4D. The lack of strong associations between 2D : 4D and AS in male patients may have resulted from their higher use of biologics

Acute Calcium Pyrophosphate Arthritis after Parathyroidectomy

Hypocalcemia after parathyroidectomy is a well-known metabolic sequela, but rare conditions such as acute calcium pyrophosphate (CPP) arthritis can be observed. In this study, we presented a case of acute CPP arthritis in both knees after parathyroidectomy. A 48-year-old man presented with pain and swelling in his right knee that started 1 day ago. There was no feature in his background and family history other than parathyroidectomy surgery performed for parathyroid adenomy a week ago. The diagnosis of acute CPP arthritis was made on the basis of blood, imaging and synovial fluid analysis. Evaluation was made after 3 days and acute arthritis in left knee was detected. Similar findings were also observed in the synovial fluid examination. After cold application and colchicine 1 mg/day started, improvement in arthritis and acute phase markers was detected. Acute CPP arthritis after parathyroidectomy is a rare condition and there are various theories in this regard. According to the most widely accepted theory; as a result of the decrease in the calcium level, the solubility of the CPP crystals decreases, and the CPP crystals previously deposited in the articular cartilage are poured into the synovial fluid. As a result; CPP arthritis should also be considered in differential diagnosis in patients with arthritis after parathyroidectomy and synovial fluid analysis should be performed

A Numerical Approach Technique for Solving Generalized Delay Integro-Differential Equations with Functional Bounds by Means of Dickson Polynomials

In this study, we have considered the linear classes of differential-(difference), integro-differential-(difference) and integral equations by constituting a generalized form, which contains proportional delay, difference, differentiable difference or delay. To solve the generalized form numerically, we use the efficient matrix technique based on Dickson polynomials with the parameter-α along with the collocation points. We also encode the useful computer program for susceptibility of the technique. The residual error analysis is implemented by using the residual function. The consistency of the technique is analyzed. Also, the numerical results illustrated in tables and figures are compared. © 2018 World Scientific Publishing Company