Author/Authors :
Kelishadi، Roya نويسنده , , Majdzadeh، Reza نويسنده , , Motlagh، Mohammad?Esmaeil نويسنده , , Heshmat، Ramin نويسنده , , Aminaee، Tahereh نويسنده , , Ardalan، Gelayol نويسنده , , ESMAILLZADEH، AHMAD نويسنده , , AZADBAKHT، LEILA نويسنده , , Poursafa، Parinaz نويسنده Environment Research Center, Isfahan University of Medical Sciences, Isfahan, Iran , , Movahedian، Mahsa نويسنده , , Baraz، Shahram نويسنده ,
Abstract :
Background: Little experience exists on valid and reliable tools for
assessment of the determinants of underweight and overweight in
children and adolescents living in the Middle-East and North Africa
(MENA). This study aimed to develop a valid and wideranging
questionnaire for assessment of these parameters in a nationwide
sample of Iranian children and adolescents.
Methods: This national study was conducted in 31 provinces in Iran.
The first phase consisted of focus group discussion with 275 children
and adolescents and their parents. After a qualitative content analysis,
the initial items were extracted. In the next step, the face validity was
assessed by expert panelists using the quantitative method of the
Impact Score. To assess the content validity, the content validity rate
(CVR) and the content validity index (CVI) were determined. The
internal consistency was examined by Cronbach alpha, and its testretest
reliability was determined. The socio-demographic variables,
perinatal factors, lifestyle factors, family history, knowledge and
attitude were assessed. Dietary intakes were assessed by a validated
168-item semi-quantitative food frequency questionnaire. A validated
questionnaire for quality of life was filled in anonymously.
Results: A team of expert researchers conducted the data analysis
of 576 interviews by using qualitative content analysis method. The
analysis process began by determining the semantic units about the
concepts studied. The initial questionnaire was developed in four
domains by including Likert scale questions. In the face validity step,
all questions of the primary questionnaire obtained a score of more
than 1.5. In the phase of CVR assessment, 6 questions obtained a
score of less than 0.62, and were omitted. The rest of questions were
assessed for CVI, and got a score of more than 0.75. Cronbach’s
alpha coefficient of the whole questionnaire was 0.97, and the
Pearson correlation coefficient of the test–retest phase was 0.94.
Conclusion: The developed questionnaire is a valid and reliable tool
for assessment of the determinants of weight disorders in a nationally
representative sample of children and adolescents in the MENA.
