Internal validity evidence of a knowledge questionnaire on alcohol use, abuse and dependence and associated questions

Vargas, Divane de; Marques, Dionasson Altivo; Volpato, Rosa Jacinto; Ramirez, Erika Gisseth Leon; Nobrega, Maria do Perpétuo Socorro de Sousa

doi:10.1590/0034-7167-2021-0377

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Brasil

Revista Brasileira de Enfermagem

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Brasil

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ORIGINAL ARTICLE • Rev. Bras. Enferm. 76 (1) • 2023 • https://doi.org/10.1590/0034-7167-2021-0377 copy

Internal validity evidence of a knowledge questionnaire on alcohol use, abuse and dependence and associated questions

Evidencia de validez interna de un cuestionario de conocimientos sobre uso, abuso y dependencia de alcohol y preguntas asociadas

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Objectives:

to perform content validity and verify the psychometric properties of the adapted version of an alcohol knowledge questionnaire and associated questions.

Methods:

a methodological study, in which a committee of judges analyzed the questionnaire item representativeness, clarity and relevance. Item response theory was used to assess the instrument psychometric properties applied to a sample of 240 health professionals.

Results:

the questions were adjusted according to judges’ assessment, obtaining a satisfactory Content Validity Index (0.98). High discrimination ability and adequate difficulty levels were observed in 75% of multiple-choice questions and in 25% of statements.

Conclusions:

the instrument presented content validity with satisfactory indices. However, it is recommended that the questionnaire adapted in this study be used in different samples of health professionals from other parts of Brazil, in order to provide greater robustness to its reliability.

Descriptors:
Knowledge; Health Personnel; Alcohol-Related Disorders; Alcohol Drinking; Validation Study

Item	Before judges’ assessment	After judges’ assessment
1	A 50-year-old patient has been using alcohol since the age of 20 Use distilled beverage (whiskey) every day: one dose (50 ml) at lunch and another (50 ml) at dinner. He is married and his wife often gets angry at the amount he drinks. In the last 5 months, he has been showing depressive symptoms, such as discouragement, loss of appetite and insomnia (__) Patient is dependent because he has been using alcohol for a long time and has marital problems due to this. (__) Patient meets criteria for diagnosis of harmful use. (__) Diagnosis is addiction because patient already has alcohol-related disorders. (__) I do not know.	A 50-year-old patient has been using alcohol since the age of 20 He drinks beer every day: two doses (700 ml) at lunch and another (350 ml) at dinner. He is married and his wife often gets angry at the amount he drinks. In the last 5 months, he has been showing depressive symptoms, such as discouragement, loss of appetite and insomnia (__) Patient is dependent because he has been using alcohol for a long time and has marital problems due to this. (__) Patient meets criteria for diagnosis of harmful use. (__) Patient uses low risk because he already has alcohol-related disorders. (__) I do not know.
5	A grown man can drink up to a maximum of 2 shots of whiskey (total of 100 ml) per day.	A grown man can drink up to a maximum of 2 cans of beer (total of 700 ml) per day.
9	The goal of (socially) safe drinking should be avoided for patients who abuse alcohol.	The goal of low-risk drinking should be avoided for patients who abuse alcohol.
10	For patients who are not motivated to treat, physicians must respect their opinion and wait until they feel motivated to start treatment.	For patients who are not motivated to treat, health professionals must respect their opinion and wait until they feel motivated to start treatment.
11	Patients in pre-contemplation consider quitting drinking, but cannot change their behavior in relation to drinking.	Patients in pre-contemplation consider quitting drinking, but still cannot change their behavior in relation to drinking.
12	Once alcohol dependence has been identified, the first guidelines should be given and patients referred to an expert.	Once alcohol dependence has been identified, health professionals must provide the first guidelines and refer patients to an expert.

Item	Clarity		Representativeness
Item	Mean (%)	CVI (%)	Mean (%)	CVI (%)
1	94.4	100.0	94.4	100.0
2	83.3	83.3	88.9	83.3
3	100.0	100.0	100.0	100.0
4	94.4	100.0	94.4	100.0
5	100.0	100.0	100.0	100.0
6	100.0	100.0	100.0	100.0
7	100.0	100.0	100.0	100.0
8	100.0	100.0	100.0	100.0
9	100.0	100.0	100.0	100.0
10	94.4	100.0	88.9	100.0
11	100.0	100.0	100.0	100.0
12	83.3	100.0	88.9	100.0

Associação Brasileira de Enfermagem SGA Norte Quadra 603 Conj. "B" - Av. L2 Norte 70830-102 Brasília, DF, Brasil, Tel.: (55 61) 3226-0653, Fax: (55 61) 3225-4473 - Brasília - DF - Brazil
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[1] Corresponding author: Divane de Vargas E-mail: vargas@usp.br