Carrillo-Bernate Y, Correa-Bautista JE, Ramirez-Velez R. Internal consistency and content validity of a questionnaire aimed to assess the stages of behavioral lifestyle changes in Colombian schoolchildren: The Fuprecol study. Rev Nutr 2017 May;30. (3).
Objective: To assess internal consistency and content validity of a questionnaire aimed to assess the stages of Behavioural Lifestyle Changes in a sample of school-aged children and adolescents aged 9 to 17 years-old. Methods: This validation study involved 675 schoolchildren from three official school in the city of Bogota, Colombia. A self-administered questionnaire called Behavioural Lifestyle Changes has been designed to explore stages of change regarding to physical activity/exercise, fruit and vegetable consumption, alcohol abuse, tobacco use, and drug abuse. Cronbach-α, Kappa index and exploratory factor analysis were used for evaluating the internal consistency and validity of content, respectively. Results: The study population consisted of 51.1% males and the participants’ average age was 12.7±2.4 years-old. Behavioural Lifestyle Changes scored 0.720 (range 0.691 to 0.730) on the Cronbach α and intra-observer reproducibility was good (Kappa=0.71). Exploratory factor analysis determined two factors (factor 1: physical activity/exercise, fruit and vegetable consumption, and factor 2: alcohol abuse tobacco use and drug abuse), explaining 67.78% of variance by the items and six interactions χ2/gL=11649.833; p <>≺ 0.001. Conclusion: Behavioural Lifestyle Changes Questionnaire was seen to have suitable internal consistency and validity. This instrument can be recommended, mainly within the context of primary attention for studying the stages involved in the lifestyle behavioural changes model on a school-based population.
The full text is available at https://dx.doi.org/10.1590/1678-98652017000300006
At A Glance
Individual Dietary Behavior Variables
|Stages of change|
Individual Physical Activity Behavior Variables
|Stages of change|
Individual Dietary Behavior
Individual Physical Activity Behavior
Measure included in article
Number of Items
Information about Development of Measure
A preliminary instrument of eight domains or subscales was produced that inquired about the stages of change for physical activity or exercise, consumption of fruits and vegetables, and consumption of harmful substances and sweets and lifestyle behaviors. The second phase involved the adaptation to Spanish and a qualitative assessment of the reactives and the relevance of the constructs by a panel of three experts. Internal consistency was estimated and exploratory factor analysis was performed.
6 - 11 Years
12 - 18 Years
Health Outcomes Assessed
BMI Measured or Self-reported
Data Reported on Race/Ethnicity
Data Reported on SES
How To Use
Instructions on Use
Instructions on instrument use included in article
Data Collection/Analysis Costs
Schoolchildren from three public schools in the city of Bogota, Colombia completed the Behavioural Lifestyle Changes questionnaire.
Instructions on Data Analysis
Instructions on analysis included in article
|Type of validity||Construct/subscale assessed||Criterion measure used||Test/statistic used||Result|
|Content||Behavioural Lifestyle Changes questionnaire, total reactives and constructs||Expert opinion||Kappa statistics||Kappa = 0.71|
|Type of reliability||Construct/subscale assessed||Test/statistic used||Result|
|Internal Consistency||Behavioural Lifestyle Changes questionnaire scales||Cronbach's alpha (Alpha)||Alpha = 0.720 (0.691 to 0.730)|