Publications by authors named "S Nielsen"

Background And Purpose: The prognosis following loco-regional failure after primary radiotherapy (RT) for head and neck squamous cell carcinoma (HNSCC) is poor. The hypothesis that most failures occur as a consequence of tumor radioresistance, can be evaluated by proxy as the proportion of failures that occur in the high-dose region. Several studies have investigated possible reasons for treatment failure by an image-based pattern of failure analyses (POF), comparing the initial planning CT scan with a scan conducted upon failure.

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Objective: Low muscle mass and chronic lung disease are common among people with HIV (PWH), but whether low muscle mass is associated with a faster decline in lung function in this population remains unknown. We aimed to determine the prevalence and associated factors of low muscle mass, and the association between low muscle mass and lung function decline in PWH.

Design: Prospective study on PWH from the Copenhagen Comorbidity in HIV Infection (COCOMO) study.

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Background: Opioid prescribing to injured workers has increased despite evidence demonstrating that risks often outweigh the benefits. High-risk prescribing and persistent opioid use are often associated with harm. However, there are limited data on what predicts early high-risk and persistent opioid prescribing in Australian workers with back and neck-related injuries or disorders.

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Objective: To identify longitudinal patterns in opioid dispensing dosages for workers with low back pain within a workers' compensation setting and to explore the risk factors associated with high-dose and persistent opioid use.

Method: We included workers with accepted claims for low back pain received by insurers between 01/01/2010 and 30/06/2016, with a follow-up period of 3.5 years (data censoring on 31/12/2020) across Victoria.

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Introduction: Opioid use and dependence are prevalent among incarcerated people, contributing to elevated rates of overdose and other harms in this population. Opioid agonist treatment (OAT) has been shown to be an effective intervention to mitigate these risks. However, challenges to health care implementation in the custodial sector result in suboptimal and variable access to OAT in prisons nationally.

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