Evidence map›Paper›PMID 32060707›Full record

ArticleSupportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer2020

Validation of two short versions of the Zarit Burden Interview in the palliative care setting: a questionnaire to assess the burden of informal caregivers.

Martina B Kühnel, Christina Ramsenthaler, Claudia Bausewein, Martin Fegg, Farina Hodiamont

Abstract readValidation Study
In one paragraph

Article in Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

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

  1. Pooled it
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  5. Conducting a randomized controlled clinical trial on palliative care in patients with glioblastoma - what are the challenges?Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2026
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  8. Caregiver burden in children with medical complexity: an approach based on the identification of associated factors.Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Martina B KühnelDepartment of Palliative Medicine, Munich University Hospital, LMU Munich, Munich, Germany. martina.kuehnel@med.uni-muenchen.de.ORCID https://orcid.org/0000-0001-5942-8915
Christina RamsenthalerDepartment of Palliative Medicine, Munich University Hospital, LMU Munich, Munich, Germany.
Claudia BauseweinDepartment of Palliative Medicine, Munich University Hospital, LMU Munich, Munich, Germany.ORCID https://orcid.org/0000-0002-0958-3041
Martin FeggDepartment of Palliative Medicine, Munich University Hospital, LMU Munich, Munich, Germany.
Farina HodiamontDepartment of Palliative Medicine, Munich University Hospital, LMU Munich, Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSeveral validated outcome measures, among them the Zarit Burden Interview (ZBI), are valid for measuring caregiver burden in advanced cancer and dementia. However, they have not been validated for a wider palliative care (PC) setting with non-cancer disease. The purpose was to validate ZBI-1 (ultra-short version and proxy rating) and ZBI-7 short versions for PC.

methodsIn a prospective, cross-sectional study with informal caregivers of patients in inpatient (PC unit, hospital palliative support team) and outpatient (home care team) PC settings of a large university hospital, content validity and acceptability of the ZBI and its structural validity (via confirmatory factor analysis (CFA) and Rasch analysis) were tested. Reliability assessment used internal consistency and inter-rater reliability and construct validity used known-group comparisons and a priori hypotheses on correlations with Brief Symptom Inventory, Short Form-12, and Distress Thermometer.

resultsEighty-four participants (63.1% women; mean age 59.8, SD 14.4) were included. Structural validity assessment confirmed the unidimensional structure of ZBI-7 both in CFA and Rasch analysis. The item on overall burden was the best item for the ultra-short version ZBI-1. Higher burden was recorded for women and those with poorer physical health. Internal consistency was good (Cronbach's α = 0.83). Inter-rater reliability was moderate as proxy ratings estimated caregivers' burden higher than self-ratings (average measures ICC = 0.51; CI = 0.23-.69; p = 0.001).

conclusionThe ZBI-7 is a valid instrument for measuring caregiver burden in PC. The ultra-short ZBI-1 can be used as a quick and proxy assessment, with the caveat of overestimating burden.

Indexed as

Adaptation, PsychologicalCaregiversCross-Sectional StudiesFactor Analysis, StatisticalFemaleHome Care ServicesHumansMaleMiddle AgedOutcome Assessment, Health CarePalliative CareProspective StudiesPsychometricsReproducibility of ResultsSurveys and QuestionnairesCaregiver burdenCaregiversPalliative carePsychometricsValidation studiesZarit burden interview

Identifiers

PMID32060707
PMCPMC7546983

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Registered trials

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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.