Evidence map›Paper›PMID 19184126›Full record

ArticleSupportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer2009

Symptom clusters in patients with advanced cancers.

Winson Y Cheung, Lisa W Le, Camilla Zimmermann

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Article in Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

65 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Gastrointestinal symptom profiles after resection of esophageal or gastric cancer.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2026
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  12. Scoping review of anticancer drug utilization in lung cancer patients at the end of life.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2025
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  18. Validation of the Arabic Version of the Edmonton Symptom Assessment System.International journal of environmental research and public health · 2023
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5 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Winson Y CheungDivision of Medical Oncology and Hematology, Department of Medicine, University of Toronto, Toronto, ON, Canada.
Lisa W Le
Camilla Zimmermann

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

goals of workIt has been observed that certain cancer symptoms frequently occur together. Prior research on symptom patterns has focused mainly on inpatients, early stage cancers, or a single cancer type or metastatic site. Our aim was to explore symptom clusters among outpatients with different advanced cancers. MATERIALS AND

methodsSymptom scores by the Edmonton Symptom Assessment Scale (ESAS) were routinely collected for patients attending the Oncology Palliative Care Clinics at Princess Margaret Hospital from January 2005 to October 2007. Principal component analysis (PCA) was performed for the entire patient cohort and within specific disease sites to determine inter-relationships of the nine ESAS symptoms. MAIN

resultsA total of 1,366 patients was included: 682 (50%) were male and 684 (50%) were female. The median age was 64 years (range 18 to 74 years). The most common primary cancer sites were gastrointestinal (27%), lung (14%), and breast (11%). The three most distressful symptoms were fatigue, poor general well-being, and decreased appetite. PCA of symptoms for the entire patient cohort revealed two major symptom clusters: cluster 1 included fatigue, drowsiness, nausea, decreased appetite, and dyspnea, which accounted for 45% of the total variance; cluster 2 included anxiety and depression, which accounted for 10% of the total variance. There was high internal reliability in the clusters (Cronbach's alpha coefficient approximately 0.80). PCA of symptoms within the various primary cancer sites revealed differences in the pattern of symptom clusters.

conclusionsIn patients with advanced cancers, distinct symptom clusters can be identified, which are influenced by primary cancer site. Treatments directed at symptom clusters rather than individual symptoms may provide greater therapeutic benefit. Further prospective studies are warranted in order to develop more effective targeted palliative interventions for the advanced cancer patient population.

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AdolescentAdultAgedAmbulatory CareCluster AnalysisFemaleHumansMaleMiddle AgedNeoplasmsOntarioPalliative CareSurveys and QuestionnairesYoung Adult

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.