Objective: To validate the general nutrition knowledge questionnaire developed by Parmenter and Wardle (1999) in a Turkish student sample. Design: The original questionnaire of Parmenter and Wardle (1999) was modified and translated into Turkish. The modified questionnaire was administered to second year undergraduate students. Some students completed the questionnaire twice for the measurement of test-retest reliability. Statistical analysis was performed on the responses to measure the internal reliability, test-retest reliability and construct validity. Setting: Students completed the questionnaire under supervision. The questionnaire was completed at the end of lectures. Retest was carried out two weeks after first administration of the test. Subjects: A total of 195 undergraduate students studying either nutrition and dietetics (n 90) or engineering (n 105) participated in the study. Of these, 125 students completed the questionnaire on two occasions. Results: Overall internal reliability (Cronbach's a 5 0?89) and test-retest reliability (0?86) were high. Significant differences between the scores of the two groups of students indicated that the questionnaire had satisfactory construct validity. Conclusions: The modified version of the general nutrition knowledge questionnaire can be used as a tool to examine the nutrition knowledge of adults in Turkey. In the next stage of the study, some adjustments need to be made to the items that led to low reliability values so that these items will be more applicable to the eating habits and patterns of Turkish people.
Keywords
Nutrition knowledge Questionnaire Validation TurkeyDietary behaviour is known to play a key role as a risk factor for chronic diseases and alterations in eating habits can have strong effects, both positive and negative, on health throughout life (1) . The burden of nutrition-related chronic diseases (such as CVD, cancer, diabetes and osteoporosis) and obesity is increasing rapidly worldwide (1) . In Turkey, CVD, cancer and diabetes are the three leading causes of death: these conditions accounted for 65 % of the nation's deaths in 2008 (2) . In addition to chronic diseases, nutrient deficiency diseases also contribute to the public health problems in Turkey. Fe deficiency is a major public health problem in Turkey. About 30-50 % of children and 50 % of pregnant/lactating women have been reported to have Fe-deficiency anaemia (3)(4)(5)(6)(7)(8) . Approximately one-third (30?5 %) of the population was reported to have iodine deficiency and related health problems (such as goitre) (9) . The prevalence of rickets (due to the deficiency of vitamin D) was found to range between 4?0 and 20?0 % (10)(11)(12)(13) . Even in those parts of Turkey that receive sufficient sunlight, some people suffer from vitamin D deficiency. This is due to cultural and religious influences which encourage people to cover their head, arms and other parts of the body (14) . These deficiencies originate from inappropriate eating patterns and habits that are instigat...