Publications by authors named "Tor-Ivar Karlsen"

Background: The understanding and conceptualizing of gender and sexuality are continuously negotiated between individuals and cultures. Recently, new gender identity orientations have emerged, fighting pathologization and establishing new spaces and options for being sexually active gendered beings.

Objective: To investigate variations in sexual activities across different gender identity orientations.

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Background: Increased complexity in the primary healthcare services has followed in the wake of health reforms and reveals the need for competence enhancement in the nursing services. Effective and visionary leadership, sufficiently qualified staff and cooperation among professionals are considered as key measures to safeguard quality in the services.

Aims: To identify which leadership styles characterise first-line nurse managers in Norwegian municipal in-patient acute care (MipAC) units and to investigate how first-line nurse managers' leadership styles are associated with team culture and documented nursing competence planning.

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Throughout Europe, local health services are increasingly being provided through various forms of inter-municipal cooperation (IMC). One of the most common forms of IMC is when small municipalities delegate the operational responsibility for providing health services to a larger host municipality. However, despite the size asymmetry usually inherent in this type of IMC, this aspect has largely been neglected in the existing literature, which mainly focuses on the size of individual municipalities.

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Background: The primary health care services are becoming increasingly complex, which presents challenges for the municipal nursing services. In Norway, municipal in-patient acute care (MipAC) has been introduced in all municipalities, and the competence at the services has been questioned. Few studies have examined the nursing services in the units.

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Inter-municipal cooperation (IMC) has gained widespread recognition as a beneficial strategy for improving efficiency and quality in the provision of out-of-hours emergency care services (OOH services). Little attention, however, has been given to the additional costs of cooperation and the relational processes through which benefits and costs are likely to result. Based on survey data from 266 (77%) Norwegian municipalities involved in IMC in OOH services in 2015, this study aimed to investigate how the structure (governance form, complexity and stability) and quality (trust and consensus) of cooperation processes interact to influence the perceived outcomes (benefits and costs) of IMC in OOH services.

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Background: Type 2 diabetes (T2DM) is associated with gastroesophageal reflux disease (GERD) in the general population, but the relationship between these conditions in candidates for bariatric surgery is uncertain. We compared the prevalence of GERD and the association between GERD symptoms and esophagitis among bariatric candidates with and without T2DM.

Methods: Cross-sectional study of baseline data from the Oseberg study in Norway.

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Study Objectives: Narcolepsy type 1 (NT1) may be complicated by comorbidities. We aimed to study the extent of obesity and other medical comorbidities in a Norwegian population of NT1 patients with debut of symptoms after the 2009 H1N1 influenza epidemic and vaccination campaign. We also aimed to explore factors associated with obesity.

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Objective: To compare the effects of a 2-year camp-based immersion family treatment for obesity with an outpatient family-based treatment for obesity on health-related quality of life (HRQoL) in two generations.

Design: Randomised controlled trial.

Setting: Rehabilitation clinic, tertiary care hospital and primary care.

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Introduction: Bariatric surgery is increasingly recognised as an effective treatment option for subjects with type 2 diabetes and obesity; however, there is no conclusive evidence on the superiority of Roux-en-Y gastric bypass or sleeve gastrectomy. The Oseberg study was designed to compare the effects of gastric bypass and sleeve gastrectomy on remission of type 2 diabetes and β-cell function.

Methods And Analysis: Single-centre, randomised, triple-blinded, two-armed superiority trial carried out at the Morbid Obesity Centre at Vestfold Hospital Trust in Norway.

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Aim: To identify critical aspects of nursing competence to care for older patients in the context of municipal in-patient acute care.

Background: An increasingly complex and advanced primary healthcare system requires attention to the extent of nursing competence in municipal services. However, competence in complex and advanced care settings must be explored using perspectives which acknowledge the complexity of nurses' performance.

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Study Objectives: Several studies have reported psychiatric comorbidity in patients with narcolepsy type 1 (NC1). The primary aim of this study was to explore the extent of psychiatric symptoms in a cohort of Norwegian NC1 patients, most of whom were H1N1-vaccinated. We also wanted to explore possible causes of the psychiatric symptoms seen in NC1.

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Objective: Cross-sectional studies show a lower health-related quality of life (HRQoL) in individuals with narcolepsy. We aimed to describe changes in HRQoL after two years of multidisciplinary follow-up in a cohort of mainly post-H1N1 vaccination narcolepsy type-1 (NT1) patients in Norway.

Methods: Prospective-cohort study.

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Background: There seems to exist a belief that weight loss is proportionally associated with improvement of health-related quality of life (HRQoL) after bariatric surgery. HRQoL is a complex multidimensional construct of one's perception of health and well-being and is measured through generic and disease specific questionnaires.

Objectives: This study aimed to test the associations between weight loss after bariatric surgery and both generic and obesity-specific HRQoL, and mental distress, controlling for other patient characteristics.

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Introduction: Roux-en-Y gastric bypass (GBP) is associated with changes in cardiometabolic risk factors and bioavailability of drugs, but whether these changes are induced by calorie restriction, the weight loss or surgery per se, remains uncertain. The COCKTAIL study was designed to disentangle the short-term (6 weeks) metabolic and pharmacokinetic effects of GBP and a very low energy diet (VLED) by inducing a similar weight loss in the two groups.

Methods And Analysis: This open, non-randomised, three-armed, single-centre study is performed at a tertiary care centre in Norway.

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Background: The preferred surgical procedure for treating morbid obesity is debated. Patient-reported outcome measures (PROMs) are relevant for evaluation of the optimal bariatric procedure.

Methods: A total of 113 patients with BMI from 50 to 60 were randomly assigned to standard (n = 57) or distal (n = 56) Roux-en-Y gastric bypass (RYGB).

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Importance: Up to one-third of patients undergoing bariatric surgery have a body mass index (BMI) of more than 50. Following standard gastric bypass, many of these patients still have a BMI greater than 40 after peak weight loss.

Objective: To assess the efficacy and safety of standard gastric bypass vs distal gastric bypass in patients with a BMI of 50 to 60.

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Impaired health-related quality of life (HRQoL) is common in bariatric surgery candidates and is often one of the motivating factors for seeking bariatric surgery. Although many studies have reported changes in HRQoL after bariatric surgery, few are long-term prospective studies and no systematic review has been conducted. A systematic database search identified studies reporting HRQoL preoperatively and≥5 years after bariatric surgery.

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Background: Studies of lifestyle intervention programs in morbid obesity report large variations in weight loss outcomes. This is reported not only between but also within standardized programs. Such reports point to participants' characteristics as possible predictors of this outcome.

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Background: There is little robust evidence relating to changes in health related quality of life (HRQL) in morbidly obese patients following a multidisciplinary non-surgical weight loss program or laparoscopic Roux-en-Y Gastric Bypass (RYGB). The aim of the present study was to describe and compare changes in five dimensions of HRQL in morbidly obese subjects. In addition, we wanted to assess the clinical relevance of the changes in HRQL between and within these two groups after one year.

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Background: The Medical Outcome Study 36-Item Short Form Health Survey (SF-36) is one of the most commonly applied generic quality of life instruments. The construct validity of the instrument in patients with morbid obesity is not established.

Participants And Methods: A total of 475 morbidly obese patients (68% women) with a mean (standard deviation) age of 44.

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Background: We aimed to investigate whether employment status was associated with health-related quality of life (HRQoL) in a population of morbidly obese subjects.

Methods: A total of 143 treatment-seeking morbidly obese patients completed the Medical Outcome Study 36-Item Short-Form Health Survey (SF-36) and the Obesity and Weight-Loss Quality of Life (OWLQOL) questionnaires. The former (SF-36) is a generic measure of physical and mental health status and the latter (OWLQOL) an obesity-specific measure of emotional status.

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