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The effect of a severe psychiatric illness on colorectal cancer treatment and survival: A population-based retrospective cohort study.

ABSTRACT: OBJECTIVES:To identify inequalities in cancer survival rates for patients with a history of severe psychiatric illness (SPI) compared to those with no history of mental illness and explore differences in the provision of recommended cancer treatment as a potential explanation. DESIGN:Population-based retrospective cohort study using linked cancer registry and administrative data at ICES. SETTING:The universal healthcare system in Ontario, Canada. PARTICIPANTS:Colorectal cancer (CRC) patients diagnosed between April 1st, 2007 and December 31st, 2012. SPI history (schizophrenia, schizoaffective disorders, other psychotic disorders, bipolar disorders or major depressive disorders) was determined using hospitalization, emergency department, and psychiatrist visit data and categorized as 'no history of mental illness, 'outpatient SPI history', and 'inpatient SPI history'. MAIN OUTCOME MEASURES:Cancer-specific survival, non-receipt of surgical resection, and non-receipt of adjuvant chemotherapy or radiation. RESULTS:24,507 CRC patients were included; 482 (2.0%) had an outpatient SPI history and 258 (1.0%) had an inpatient SPI history. Individuals with an SPI history had significantly lower survival rates and were significantly less likely to receive guideline recommended treatment than CRC patients with no history of mental illness. The adjusted HR for cancer-specific death was 1.69 times higher for individuals with an inpatient SPI (95% CI 1.36-2.09) and 1.24 times higher for individuals with an outpatient SPI history (95% CI 1.04-1.48). Stage II and III CRC patients with an inpatient SPI history were 2.15 times less likely (95% CI 1.07-4.33) to receive potentially curative surgical resection and 2.07 times less likely (95% CI 1.72-2.50) to receive adjuvant radiation or chemotherapy. These findings were consistent across multiple sensitivity analyses. CONCLUSIONS:Individuals with an SPI history experience inequalities in colorectal cancer care and survival within a universal healthcare system. Increasing advocacy and the availability of resources to support individuals with an SPI within the cancer system are warranted to reduce the potential for unnecessary harm.

SUBMITTER: Mahar AL

PROVIDER: S-EPMC7390537 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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The effect of a severe psychiatric illness on colorectal cancer treatment and survival: A population-based retrospective cohort study.

Mahar Alyson L AL Kurdyak Paul P Hanna Timothy P TP Coburn Natalie G NG Groome Patti A PA

PloS one 20200729 7

<h4>Objectives</h4>To identify inequalities in cancer survival rates for patients with a history of severe psychiatric illness (SPI) compared to those with no history of mental illness and explore differences in the provision of recommended cancer treatment as a potential explanation.<h4>Design</h4>Population-based retrospective cohort study using linked cancer registry and administrative data at ICES.<h4>Setting</h4>The universal healthcare system in Ontario, Canada.<h4>Participants</h4>Colorec ...[more]

PMID: 32726314

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Project description:IntroductionColorectal cancer (CRC) mortality is significantly higher in those with severe mental illness (SMI) compared with the general population, despite similar incidence rates, suggesting that barriers to optimal screening and cancer care may contribute to disparities in CRC mortality in those with SMI. This study aims to compare participation in Australia's National Bowel Cancer Screening Programme (NBCSP) in those with SMI and those in the general population. We will also investigate treatment pathways after diagnosis to determine whether treatment variations could explain differences in CRC mortality.Methods and analysisWe will undertake a retrospective cohort study of Australians using linked administrative data to assess differences in screening and cancer care between those with and without SMI, aged 50-74 years on or after 1 January 2006. People with SMI will be defined using antipsychotic medication prescription data. The comparison group will be people enrolled in Medicare (Australia's universal healthcare system) who have not been prescribed antipsychotic medication. Data on outcomes (NBCSP participation, follow-up colonoscopy, CRC incidence and CRC-cause and all-cause mortality) and confounders will be obtained from national-based and state-based administrative health datasets. All people in New South Wales, aged 50-74 with a new diagnosis of CRC on or after 1 January 2006, will be ascertained to examine stage at diagnosis and cancer treatment in those with and without SMI. Poisson regression will be used to calculate incidence rates and rate ratios for each outcome.Ethics and disseminationEthics approval has been obtained from the University of Queensland Human Research Ethics Committee, the Australian Institute of Health and Welfare Ethics Committee and data custodians from every Australian State/Territory. Findings will be disseminated via publications in peer-reviewed journals and presented at appropriate conferences.Trial registration numberACTRN12620000781943.

Project description:ObjectivesTo evaluate treatment and survival from glioblastoma in a real-world setting.Design and settingsA population-based retrospective cohort study from Western Norway.Participants363 patients aged 18 years or older diagnosed with glioblastoma between 1 January 2007 and 31 December 2014.Primary and secondary outcome measuresOverall survival and survival rates determined by Kaplan-Meier method, groups compared by log-rank test. Associations between clinical characteristics and treatment approach assessed by logistic regression. Associations between treatment approach and outcome analysed by Cox regression.ResultsMedian overall survival was 10.2 months (95% CI 9.1 to 11.3). Resection was performed in 221 patients (60.9%), and was inversely associated with age over 70 years, higher comorbidity burden, deep-seated tumour localisation and multifocality. Median survival was 13.7 months (95% CI 12.1 to 15.4) in patients undergoing tumour resection, 8.3 months (95% CI 6.6 to 9.9) in patients undergoing biopsy and 4.5 months (95% CI 4.0 to 5.1) in patients where no surgical intervention was performed. Chemoradiotherapy according to the Stupp protocol was given to 157 patients (43%). Age over 70 years, higher comorbidity burden and cognitive impairment were associated with less intensive chemoradiotherapy. Median survival was 16.3 months (95% CI 14.1 to 18.5), 7.9 months (95% CI 6.7 to 9.0) and 2.0 months (95% CI 0.9 to 3.2) in patients treated according to the Stupp protocol, with less intensive chemoradiotherapy and with best supportive care, respectively. Surgical resection (HR 0.61 (95% CI 0.47 to 0.79)) and chemoradiotherapy according to the Stupp protocol (HR 0.09 (95% CI 0.06 to 0.15)) were strongly associated with favourable overall survival, when adjusted for clinical variables.ConclusionsIn a real-world setting, less than half of the patients received full-course chemoradiotherapy, with a median survival comparable to results from clinical trials. Survival was considerably worse in patients receiving less intensive treatment. Our results point out a substantial risk of undertreating glioblastoma, especially in elderly patients.

Project description:BackgroundSuper diversity has become a twenty-first-century phenomena in the UK. The Five Year Forward View Plan for Mental Health commits to improving access to Perinatal Mental Health services for all new mothers. Existing research indicates various postnatal mental illness aetiologies, traditional practices and beliefs, which are important to explore during medical consultation to achieve a collaborative relationship between the patient and clinician. The study of severe postnatal psychiatric illnesses is well established in the quantitative literature; however, the subjective experiences of mothers with severe psychiatric illnesses after childbirth have been given little attention. The aim of this systematic review is to synthesise the small body of qualitative findings, which will achieve a deeper understanding of mothers' experiences and understandings. This integration of qualitative data is invaluable in facilitating culturally competent strategies in Western settings and informing future research.Methods/designThis protocol proposes a systematic review of qualitative literature of severe postnatal psychiatric illnesses, using a meta-ethnography approach following the PRISMA-P guidelines. A comprehensive search strategy will be developed to undertake a systematic search via online databases to identify eligible articles. Studies will be considered for eligibility if they include mothers aged 18 and over who have been diagnosed with a severe psychiatric illness during the postnatal period; present primary data on women's illness experiences; use qualitative methods. Titles and abstracts will be screened by the primary reviewer to identify potential papers. Two independent reviewers will access and read texts in full and agree on the final list of included studies. Discrepancies will be resolved via consultation with a third independent reviewer. The final list of included studies for review will be methodologically appraised by two independent reviewers using the Critical Appraisal Skills Programme. This systematic review protocol has been registered with the International Prospective Register of Systematic Reviews (PROSPERO): CRD42018093674.DiscussionTo date, no systematic review following a meta-ethnographic approach on qualitative explorations of mothers worldwide diagnosed with severe postnatal psychiatric illnesses has been conducted. An amalgamation of this information enables a deeper understanding of how severe postnatal psychiatric illnesses manifests across cultures. This information is useful when devising culturally competent care.Systematic review registrationCRD42018093674.

Project description:BACKGROUND:Advanced cancer stage at diagnosis may explain high cancer mortality among patients with a severe psychiatric illness (SPI). Studies to date investigating advanced stage cancer at diagnosis as a potential explanation for high cancer mortality in individuals with a history of mental illness have been inconclusive. We examined the relationship between a SPI history and unknown cancer stage at diagnosis in colorectal cancer (CRC) patients. METHODS:This was a population-based, cross-sectional study using linked administrative databases of CRC patients diagnosed between 01/04/2007 and 31/12/2012. Individuals who had a history of mental illness but did not meet the definition of a SPI were excluded. An SPI was measured in the 5 years prior to the cancer diagnosis and categorized as inpatient, outpatient or no SPI. Individuals with a best stage in Stage 0 to Stage IV were considered staged and absence of staging information was defined as unknown stage. The risk of unknown stage cancer was estimated using modified Poisson regression. RESULTS:The final study cohort included 24,507 CRC patients. 258 (1.1%) individuals experienced a history of inpatient SPI and 482 (2.0%) experienced outpatient SPI. After adjusting for confounders, CRC patients with an inpatient or outpatient history of SPI were at greater risk of having missing TNM stage at diagnosis, compared to patients with no history of a mental illness (RR 1.45 (95% CI: 1.14-1.85) and RR1.17 (95% CI 0.95-1.43), respectively). The results did not change when alternate practices to assign SPI history using administrative data were used. CONCLUSIONS:Individuals with an SPI, especially those with a psychiatric admission, were more likely to have missing stage data compared to individuals without a history of a mental illness. Incomplete and low quality cancer staging data likely undermines the quality of cancer care following initial diagnosis. Understanding why patients with an SPI are missing this information is a critical first step to providing excellent care to this vulnerable population.

Dataset Information

The effect of a severe psychiatric illness on colorectal cancer treatment and survival: A population-based retrospective cohort study.

Publications

The effect of a severe psychiatric illness on colorectal cancer treatment and survival: A population-based retrospective cohort study.

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