Validation of questionnaire to Assess the Impact of Dementia on the Family

Mafalda Sofia Gomes Oliveira da Silva*, Luís Octávio de Sá, Sandra Sofia Barbosa Pinto de Almeida, Ana Catarina Rodrigues da Silva Reis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review



OBJECTIVE: To validate a questionnaire to assess the impact of dementia on one of the household members. METHODS: Methodological study. The instrument was designed based on literature review, expert opinion, and researchers' experience and then applied to a non-probability convenience sample consisting of 262 family members who live daily with a person with dementia. The construct validity was studied by exploratory factor analysis, principal components method, with varimax rotation of the items. RESULTS: An instrument with 30 items was obtained, distributed in four dimensions: "Emotional dimension," "Economic dimension," "Family relations dimension," and "Support-seeking dimension." Factor analysis revealed a total explained variance of 54.96% and a total Cronbach's alpha of .899. CONCLUSIONS: The instrument presents high internal consistency, grouped into four dimensions, all closely related to the family's adaptation to the onset of dementia in one of its members.

Original languageEnglish
Article numbere20210232
Number of pages8
JournalRevista Brasileira de Enfermagem
Issue numberSuppl 4
Publication statusPublished - 15 Apr 2022


  • Dementia
  • Family relations
  • Validation study
  • Nursing
  • Factor analysis


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