Evaluation of questionnaire as an instrument to measure the level of nutritional and weight gain knowledge in pregnant women in Poland. A pilot study

Autoři: Ewa Mierzejewska aff001;  Talita Honorato-Rzeszewicz aff001;  Dorota Świątkowska aff002;  Marzena Jurczak-Czaplicka aff003;  Tomasz Maciejewski aff002;  Anna Fijałkowska aff004;  Jagna Szulc-Kamińska aff002;  Anna Czach aff002;  Hanna Nałęcz aff003;  Dorota Szostak-Węgierek aff005;  Katarzyna Szamotulska aff001
Působiště autorů: Department of Epidemiology and Biostatistics, Institute of Mother and Child, Warsaw, Poland aff001;  Obstetrics and Gynecology Clinic, Institute of Mother and Child, Warsaw, Poland aff002;  Department of Child and Adolescent Health, Institute of Mother and Child, Warsaw, Poland aff003;  Department of Cardiology, Institute of Mother and Child, Warsaw, Poland aff004;  Department of Clinical Dietetics, Warsaw Medical University, Warsaw, Poland aff005
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.pone.0227682


Pregnancy is a period in life in which women are willing to improve their lifestyle. Providing proper information for these women is crucial for their health and the health of their offspring. Clear information about weak points in their nutritional and weight gain knowledge is the first step for proper health care assistance. There are a few previous studies evaluating the nutritional and weight gain knowledge of pregnant women. In the few studies available, different approaches were taken and there was no wider discussion on the content of the questionnaires attempting to measure level of knowledge. The aim of this study, designed in a pilot fashion, was to test the adequacy of the questionnaire as a research instrument in a group of 139 pregnant Polish women. The developed instrument is a 33-item questionnaire comprising four domains: weight gain, importance of nutrients, quality and quantity of food intake. The results of this study indicate that the questionnaire is stable and internal consistency is acceptable (Cronbach’s alpha > 0.7) for dimensions with more than four items. For dimensions with less than four items, internal consistency was poor (Cronbach’s alpha < 0.7). The cumulative explained variance for domains weight gain, importance of nutrients, quantity and quality of food intake was 54.74%, 42.74%, 54.42% and 48.99% respectively. Results from validity, reliability and factor analysis indicate that the questionnaire is adequate for its purpose.

Klíčová slova:

Factor analysis – Food – Nutrients – Nutrition – Pregnancy – Questionnaires – Research validity – Weight gain


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