Publications by authors named "Kerrie Clover"

Importance: Test accuracy studies often use small datasets to simultaneously select an optimal cutoff score that maximizes test accuracy and generate accuracy estimates.

Objective: To evaluate the degree to which using data-driven methods to simultaneously select an optimal Patient Health Questionnaire-9 (PHQ-9) cutoff score and estimate accuracy yields (1) optimal cutoff scores that differ from the population-level optimal cutoff score and (2) biased accuracy estimates.

Design, Setting, And Participants: This study used cross-sectional data from an existing individual participant data meta-analysis (IPDMA) database on PHQ-9 screening accuracy to represent a hypothetical population.

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Introduction: Research indicates that the immobilisation mask required for radiation therapy (RT) for head and neck cancers can provoke intense anxiety. However, little is known about the rates of this anxiety, whether it changes over a course of treatment and how it is managed in clinical practice. This study aimed to describe the rates and patterns of situational anxiety in patients undergoing RT for head and neck cancer and the use of anxiety management interventions in current clinical practice in a major regional cancer setting in New South Wales, Australia.

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Unlabelled: Procedural anxiety is a concern for a number of patients undergoing radiation therapy. While procedural anxiety is often treated pharmacologically, there is a clinical need for effective alternative strategies for patients who are contraindicated from medication use, and those who prefer not to take unnecessary medications.

Objectives: The primary objective was to assess the efficacy of nonpharmacological interventions delivered to adults with cancer, in the radiation oncology department, just prior to, or during radiation therapy, in reducing levels of self-reported procedural anxiety.

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Introduction: More than 20% of patients undergoing radiation therapy for head and neck cancer report anxiety specifically related to the immobilisation mask, a tight-fighting mask patients are required to wear for the duration of each treatment session. However, limited research has investigated this from the patient perspective. The aim of this study was to better understand patient experiences of mask anxiety during head and neck cancer radiation therapy and to explore patient attitudes toward potential strategies that may reduce mask anxiety during this treatment.

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Article Synopsis
  • The study compares the effectiveness of two screening tools for major depression: the seven-item Hospital Anxiety and Depression Scale Depression subscale (HADS-D) and the total score of the 14-item version (HADS-T), which includes anxiety items and takes longer to complete.
  • An analysis of data from 20,700 participants revealed that both HADS-D and HADS-T had similar sensitivity and specificity for detecting major depression, with optimal cutoffs being ≥7 for HADS-D and ≥15 for HADS-T.
  • Overall, while both tools are accurate, the shorter HADS-D is preferred in most clinical settings due to its simplicity and time efficiency.
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Introduction: Patients undergoing treatment for cancer who require radiation therapy (RT) report anxiety specifically relating to the RT procedure. Procedural anxiety can be detrimental to treatment delivery, causing disruptions to treatment sessions, or treatment avoidance. Acute procedural anxiety is most commonly managed with anxiolytic medication.

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Background: Detecting anxiety in oncology patients is important, requiring valid yet brief measures. One increasingly popular approach is the Patient Reported Outcomes Measurement Information System (PROMIS); however, its validity is not well established in oncology. We assessed the convergent and criterion validity of PROMIS anxiety measures in an oncology sample.

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Objectives: Validated diagnostic interviews are required to classify depression status and estimate prevalence of disorder, but screening tools are often used instead. We used individual participant data meta-analysis to compare prevalence based on standard Hospital Anxiety and Depression Scale - depression subscale (HADS-D) cutoffs of ≥8 and ≥11 versus Structured Clinical Interview for DSM (SCID) major depression and determined if an alternative HADS-D cutoff could more accurately estimate prevalence.

Methods: We searched Medline, Medline In-Process & Other Non-Indexed Citations via Ovid, PsycINFO, and Web of Science (inception-July 11, 2016) for studies comparing HADS-D scores to SCID major depression status.

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Article Synopsis
  • Procedural anxiety in oncology patients is a common issue, often triggered by fear of medical procedures like imaging and treatment, with current management primarily relying on anxiolytic medications which aren't suitable for all patients.
  • This systematic review will explore the effectiveness of non-pharmacological interventions to reduce procedural anxiety for cancer patients undergoing radiotherapy.
  • The review will analyze various studies using established databases to assess the impacts of these interventions on self-reported anxiety levels and additional outcomes such as physiological measures and treatment-related factors.
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Article Synopsis
  • - The PHQ-9 is a 9-question tool for identifying and assessing the severity of depression, while the shorter PHQ-2 focuses on the frequency of depressed mood and anhedonia and can serve as an initial screening step.
  • - A study combining data from various sources aimed to evaluate the accuracy of the PHQ-2 alone and alongside the PHQ-9 in detecting major depression through comparisons with validated diagnostic interviews.
  • - Results showed that the PHQ-2 has good sensitivity (91%) but lower specificity (67%) at a score cutoff of 2, with improved performance at a cutoff of 3, indicating it can effectively help in initial screenings for depression when used with interviews.
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Objectives: Depression symptom questionnaires are not for diagnostic classification. Patient Health Questionnaire-9 (PHQ-9) scores ≥10 are nonetheless often used to estimate depression prevalence. We compared PHQ-9 ≥10 prevalence to Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders (SCID) major depression prevalence and assessed whether an alternative PHQ-9 cutoff could more accurately estimate prevalence.

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Objective: Two previous individual participant data meta-analyses (IPDMAs) found that different diagnostic interviews classify different proportions of people as having major depression overall or by symptom levels. We compared the odds of major depression classification across diagnostic interviews among studies that administered the Depression subscale of the Hospital Anxiety and Depression Scale (HADS-D).

Methods: Data accrued for an IPDMA on HADS-D diagnostic accuracy were analysed.

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Background: Screening for major depression with the Patient Health Questionnaire-9 (PHQ-9) can be done using a cutoff or the PHQ-9 diagnostic algorithm. Many primary studies publish results for only one approach, and previous meta-analyses of the algorithm approach included only a subset of primary studies that collected data and could have published results.

Objective: To use an individual participant data meta-analysis to evaluate the accuracy of two PHQ-9 diagnostic algorithms for detecting major depression and compare accuracy between the algorithms and the standard PHQ-9 cutoff score of ≥10.

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Background: It is unknown how many distressed patients receive the additional supportive care recommended by Australian evidence-based distress management guidelines. The study identifies the (1) distress screening practices of Australian cancer services; (2) barriers to improving practices; and (3) implementation strategies which are acceptable to service representatives interested in improving screening practices.

Method: Clinic leads from 220 cancer services were asked to nominate an individual involved in daily patient care to complete a cross-sectional survey on behalf of the service.

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Background: The objective of this study was to develop and validate a short form of the Patient Health Questionnaire-9 (PHQ-9), a self-report questionnaire for assessing depressive symptomatology, using objective criteria.

Methods: Responses on the PHQ-9 were obtained from 7,850 English-speaking participants enrolled in 20 primary diagnostic test accuracy studies. PHQ unidimensionality was verified using confirmatory factor analysis, and an item response theory model was fit.

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Background: Different diagnostic interviews are used as reference standards for major depression classification in research. Semi-structured interviews involve clinical judgement, whereas fully structured interviews are completely scripted. The Mini International Neuropsychiatric Interview (MINI), a brief fully structured interview, is also sometimes used.

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Purpose: To assess the convergent validity of the Patient-Reported Outcomes Measurement Information System (PROMIS) depression measures relative to legacy measures and criterion validity against a structured diagnostic interview for depression in an oncology sample.

Methods: 132 oncology/haematology outpatients completed the PROMIS Depression Computer Adaptive Test (PROMIS-D-CAT) and PROMIS Depression Short Form (PROMIS-D-SF) along with seven legacy measures: Beck Depression Inventory (BDI); Centre for Epidemiological Studies Depression (CES-D); Depression, Anxiety and Stress Scale; Hospital Anxiety and Depression Scale; Patient Health Questionnaire; Distress Thermometer and PSYCH-6. Correlations, area under the curve (AUC) and diagnostic accuracy statistics were calculated with Structured Clinical Interview as the gold standard.

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Purpose: The importance of distress identification and management in oncology has been established. We examined the relationship between distress and unmet bio-psychosocial needs, applying advanced statistical techniques, to identify which needs have the closest relationship to distress.

Methods: Oncology outpatients (n = 1066) undergoing QUICATOUCH screening in an Australian cancer centre completed the distress thermometer (DT) and problem list (PL).

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Background: The use of different depression self-report scales warrants co-calibration studies to establish relationships between scores from 2 or more scales. The goal of this study was to examine variations in measurement across 5 commonly used scales to measure depression among patients with cancer: Hospital Anxiety and Depression Scale-Depression subscale (HADS-D), Centre for Epidemiologic Studies Depression Scale (CES-D), Patient Health Questionnaire-9 (PHQ-9), Beck Depression Inventory-II (BDI-II), and Depression Anxiety and Stress Scale-Depression subscale (DASS-D).

Methods: The depression scales were completed by 162 patients with cancer.

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Background: This study aimed to explore barriers to and enablers for future implementation of a draft clinical pathway for anxiety and depression in cancer patients in the Australian context.

Methods: Health professionals reviewed a draft clinical pathway and participated in qualitative interviews about the delivery of psychosocial care in their setting, individual components of the draft pathway, and barriers and enablers for its future implementation.

Results: Five interrelated themes were identified: ownership; resources and responsibility; education and training; patient reluctance; and integration with health services beyond oncology.

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Objective: Many patients who experience distress do not seek help, and little is known about the reasons for this. We explored the reasons for declining help among patients who had significant emotional distress.

Methods: Data were collected through QUICATOUCH screening at an Australian hospital.

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Background: Active Surveillance (AS) is recommended for the treatment of localised prostate cancer; however this option may be under-used, at least in part because of expectations of psychological adverse events in those offered or accepting AS.

Objective: (1) Determine the impact on psychological wellbeing when treated with AS (non-comparative studies). (2) Compare AS with active treatments for the impact on psychological wellbeing (comparative studies).

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Purpose: The distress thermometer (DT) is commonly used in cancer care to improve detection of distress. The DT's recommended cut-off score of 4 or 5 has typically been established using the Hospital Anxiety and Depression Scale (HADS) by receiver operating characteristic curve analysis. The present analysis complements these studies by critically examining the use of the HADS to identify the DT's cut-off score and corroborating the DT's cut-off scores using item response theory (Rasch analysis).

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Background: Repetition of hospital-treated self-poisoning and admission to psychiatric hospital are both common in individuals who self-poison.

Aims: To evaluate efficacy of postcard intervention after 5 years.

Method: A randomised controlled trial of individuals who have self-poisoned: postcard intervention (eight in 12 months) plus treatment as usual v.

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Objective: Although effective treatments for pain and distress are available, many patients do not access them. Improved understanding of patients' desire for help may improve uptake of services.

Methods: Data were collected as part of the QUICATOUCH screening program at an Australian regional hospital.

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