# Evidence of validity of the Smoking Cessation Counseling scale - Brazilian version

## TL;DR

This study evaluates the validity and reliability of a Brazilian version of a smoking cessation counseling instrument.

## Contribution

The study provides psychometric validation of the Brazilian version of the Smoking Cessation Counseling scale.

## Key findings

- Seven items from the Advanced Counseling domain and one from the Basic Counseling domain were excluded to improve validity.
- Composite reliability ranged from 0.76 to 0.86, and Cronbach’s alpha was 0.86 overall.
- The final instrument consists of 16 items across four domains and shows adequate psychometric properties.

## Abstract

to evaluate the evidence of validity of the internal structure and reliability of the Brazilian version of the Smoking Cessation Counseling instrument

psychometric study of confirmatory factor analysis and reliability carried out on 250 nurses in clinical practice. For the analysis of the convergent validity of the factor model, Average Variance Extracted values were calculated, and discriminant analysis was carried out using the Fornell-Larcker criterion. Reliability was examined using Cronbach’s alpha coefficient and composite reliability

it was necessary to exclude seven items from the Advanced Counseling domain and one item from the Basic Counseling domain in order to properly obtain the Average Variance Extracted values and the Fornell-Larcker criterion. The composite reliability ranged from 0.76 to 0.86 and the overall Cronbach`s alpha coefficient was 0.86, ranging from 0.53 to 0.84 depending on the domain assessed. The final version of the instrument was made up of 16 items divided into 4 domains

the Brazilian version of Smoking Cessation Counseling obtained adequate psychometric evidence of validity and reliability. Further studies are needed to refine the instrument.