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Sökning: L4X0:0345 0082 > (2015-2019) > Steinvall Ingrid 1959

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1.
  • Bäckström, Denise, 1976- (författare)
  • Injury mortality in Sweden; changes over time and the effect of age and injury mechanism
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Background: Injuries are one of the most common causes of death in the world. Varying types of injuries dominate in different parts of the world, which also have separate influences mortality. In Scandinavia blunt injuries dominates and the majority of those who die do so pre hospital. Over time different injury pattern may vary and by analyzing this we can assess when, where and how preventive work can be reinforced. The aim of this thesis was to study injury epidemiology in Sweden and assess the contribution of different injury patters on mortality. Method: We used the Swedish cause of death and the national patient registries which have a complete national coverage. ICISS was calculated (based on ICD-10) in the in hospital population. We have chosen to do this investigation with a broad perspective using the term injury, which includes trauma but also other diagnoses like suffocation and drowning. Results: During the study period (1999-2012) the number of deaths because of injury was 1213, 25 388, and 18 332 among children, working age and elderly, respectively. Mortality declined in the children and in the working age but inclined in the elderly. Mortality increased with each age group except between the ages of 15–25 and 26–35 years. One thousand two hundred sixty four (97%) of those who died because of penetrating trauma (sharp objects and firearms) were killed by intentional trauma (assault and intentional self-harm). One thousand and seventeen (83%) of the children died prehospital. In the working age 22 211 (80%) of 25 388 died pre hospital. Nine thousand six hundred and eighteen (53%) of 18 332 of the elderly died prehospital. During 2001- 2011 the risk adjusted in hospital mortality decreased in traffic and assault but not in fall related injuries. Discussion: Largely, the anticipated injury mortality picture was found, with blunt injuries (traffic accidents) dominating in the working age and falls in elderly. Further a significant portion of the deaths occurred pre hospital. The intentional injuries are dominated by intentional selfharm. The decrease in child injury mortality is notable as Sweden already has one of the lowest incidences in child injury mortality in the world. The decrease in injury mortality in the working age also implies that preventive work has had an effect. The incline in injury mortality in elderly on the other hand needs to be further studied. Areas of particular importance for future preventive work is the incline in injury mortality in elderly and intentional injuries among children. 
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2.
  • Larsen, Robert, 1980- (författare)
  • Risk-Adjustment for Swedish In-Hospital Trauma Mortality using International Classification of disease Injury Severity Score (ICISS) : issues with description and methods
  • 2019
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • IntroductionDifferent methods have been used to describe the epidemiology of trauma with varying results. Crude mortality outcome data differ significantly from risk-adjusted information. A previous standard method for risk-adjustment in trauma was the Injury Severity Score (ISS), although it has several shortcomings. In this thesis I examine Swedish injury statistics from an epidemiological perspective using crude and risk-adjusted mortality, and to adjust for injury I used the International Classification of disease Injury Severity Score (ICISS). The groups of most lethal injuries (fall, traffic, and assault) were examined separately using an ICISS mortality prediction model that focused particularly on the effects on the prediction of mortality by adding coexisting conditions (comorbidity) to it. Differences in mortality between the sexes and changes over time were tested separately.Material and MethodsData from all patients with ICD-10 based diagnoses of injury (ICD-10: V01 to Y36) in the Swedish National Patient Registry and Cause of Death Registry were collected from 1999 to 2012 and used for assessment of mortality and comorbidity. A subgroup (patients in hospital) from 2001-2011 were selected as the study group. Their injuries were in the subgroups of falls, traffic, and assaults, and are the focus of this thesis. Mortality within 30 days of injury was used as the endpoint. The severity of injury was adjusted for using the ICISS, which was first described by Osler et al. The model was also adjusted for age, sex, and comorbidities.ResultsThe study group comprised 815 846 patients (of whom 17 721 died). There was a decrease over time in injuries caused by falls and traffic (coefficient -4.71, p=0.047 and coefficient -5.37, p<0.001), whereas there was no change in assault-related injuries/100 000 inhabitants. The risk-adjusted 30-day mortality showed a decrease in injuries related to traffic and assault (OR 0.95, p<0.001 and OR 0.93, p=0.022) whereas for falls it remained unchanged. There was also a risk-adjusted survival benefit for women, which increased with increasing age. Adjusting for comorbidities made the prediction of 30-day mortality by the ICISS model better (accuracy, calibration, and discrimination). However, most of this effect was found to be the result of the other characteristics of the fall related injury group (they were older, and had more coexisting conditions).ConclusionDuring a 10-year period, there has been a significant overall decrease in crude as well as risk-adjusted mortality for these three injury groups combined. Within these groups there is a clear, risk-adjusted, female survival advantage. The ICISS model for the prediction of mortality improves when comorbidities are added, but this effect is minor and seen mainly among the injuries caused by falls, where comorbidity is significant. The ICISS method was a valuable adjunct in the investigation of data on Swedish mortality after injury that has been gathered from health care registry data.
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3.
  • Pompermaier, Laura, 1975- (författare)
  • Outcome of burn care : the mortality perspective
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Background: Despite the improvements in burn care during the last decades, burns remain catastrophic for the patients and a challenge for the care-givers.  The early outcome of burn care is to assess its quality and to improve it, but the crucial outcome is mortality, which is the main focus of this thesis. In particular, I address questions about mortality that have arisen from working with burned patients and that can have clinical consequences: the impact of pre- existing medical conditions; long-term survival; the causes of unexpected deaths; and the possible differences between sexes in the provision of resources.Patients with burns share the fact that the time of their injury is known, its severity can be quantified from the size of the burn, and the care is relatively standardised. The analysis of outcome among burned patients treated at a single burn centre may therefore be of general value to others who treat burns.Methods: We retrospectively analysed data that had been collected prospectively (the burn    unit database) from patients with burns admitted consecutively to a national burn centre in Sweden during the last 25 years.Results: Age and percentage of total body surface area burned (TBSA %) affected the in- hospital mortality, whereas pre-existing medical conditions did not influence the prediction of outcome (Paper I). After discharge, both age and the presence of full thickness burns reduced the long-term survival, whereas the extent of the burn (TBSA %) did not (Paper II). Most patients with moderate burns who die in hospital despite a good prognosis, die for reasons   other than the burn (Paper III). Previously, it has been shown that sex is not an independent factor for mortality during burn care; in this thesis we show that the sex of the patients did not affect the number of medical interventions given either (Paper IV).Conclusion: The addition of “coexisting condition” to a mortality model based on age and   size of burn does not improve its predictive value; rather, the factor “age” is sufficient to adjust for comorbidity in the assessment of a burn and its outcome (Paper I).If patients with burns survive, the long-term prognosis is good. The effect of age is the one that governs survival, whereas the effect of the extent of the burn ends when the patient is discharged (Paper II).The in-hospital mortality during burn care is low, but some patients die for reasons other than the actual burn (Paper III).In a centre where the mortality is independent of the sex of the patient, the provision of medical interventions is also equal between men and women (Paper IV).
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