Ivar Kristiansen

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The incidence of hip fractures in Oslo has shown a secular increase during the past decades. The main aims of the present study were to report the current incidence of hip fractures in Oslo and to determine whether there is a seasonal variation in the occurrence of fractures. Using the electronic diagnosis registers and the lists of the operating theater(More)
OBJECTIVE To compare levels of health-related quality of life (HRQOL) among patients with rheumatoid arthritis (RA) to those of the general population. METHODS Disease burden was assessed using a generic health status instrument (Medical Outcome Study Short Form-36) for measurements of HRQOL and SF-6D to calculate utility scores in representative patients(More)
BACKGROUND New screening technologies and vaccination against human papillomavirus (HPV), the necessary cause of cervical cancer, may impact optimal approaches to prevent cervical cancer. We evaluated the cost-effectiveness of alternative screening strategies to inform cervical cancer prevention guidelines in Norway. METHODS We leveraged the primary(More)
OBJECTIVE This study aims to evaluate the costs and health outcome for surgical and conservative treatment of displaced proximal humeral fractures. DESIGN This study is a randomised controlled trial. PARTICIPANTS This study included 50 patients aged 60 or older admitted to hospital with a severely displaced three- or four-part fracture. INTERVENTIONS(More)
Despite several studies showing a higher incidence of peri-implant femoral fractures with the Gamma nail than with a sliding screw plate (SSP), the Gamma nail has remained the standard implant for trochanteric fractures in many hospitals. We recorded 921 trochanteric fractures in the city of Oslo during 2 years and compared the reoperation frequency in(More)
In 1988/89, 10,497 men and women aged 40-42 were invited to a health screening in the County of Nordland in northern Norway. The screening procedure comprised completion of a questionnaire, measurement of blood pressure, weight, height and collection of a non-fasting blood sample. Eighty-two percent of the invited population attended the screening. They(More)
OBJECTIVE The overall aim of this study was to estimate the total costs for patients with RA, AS and psoriatic arthritis (PsA) treated with DMARDs. Specific aims were to compare the costs across diagnoses and over time. METHODS The main data source was the Norwegian DMARD register (NOR-DMARD) that captures outcomes and resource use among patients starting(More)
BACKGROUND The aim of this study was to describe how diabetes complications influence the health-related quality of life of individuals with diabetes using the individual EQ-5D dimensions and the EQ-5D index. METHODS We mailed a questionnaire to 1,000 individuals with diabetes type 1 and 2 in Norway. The questionnaire had questions about socio-demographic(More)
The aim of this study was to describe the consequences of hip fracture with respect to changes in residential needs and the ability to perform activities of daily life. Patients 50 years and older admitted to the two largest hospitals of Oslo with a hip fracture during the period May 1996 through April 1997 were identified. In November 1997 a questionnaire(More)
BACKGROUND Information on the benefits of therapeutic interventions can be ex-pressed in various ways, including relative risk reduction, absolute risk reduction,and number needed to treat (NNT). An alternative to such risk-based measures is postponement of an adverse outcome (eg, hip fracture in the case of osteoporosis). OBJECTIVE The goal of this study(More)