OBJECTIVE: To compare the relative validity of food group intakes derived from a comprehensive self-administered diet history questionnaire (DHQ) and a brief-type DHQ (BDHQ) developed for the assessment of Japanese diets during the previous month using semi-weighed dietary records (DR) as a reference method. DESIGN: Between November 2002 and September 2003, a 4 d DR (covering four non-consecutive days), a DHQ (150-item semi-quantitative questionnaire) and a BDHQ (fifty-eight-item fixed-portion-type questionnaire) were completed four times (once per season) at 3-month intervals. SETTING: Three areas in Japan: Osaka, Nagano and Tottori. SUBJECTS: Ninety-two Japanese women aged 31-69 years and ninety-two Japanese men aged 32-76 years. RESULTS: Median food group intakes were estimated well for approximately half of the food groups. No statistically significant differences were noted between a 16 d DR and the first DHQ (DHQ1) or between the DR and the first BDHQ (BDHQ1) in fifteen (44 %) and fifteen (52 %) food items for women and in fourteen (41 %) and sixteen (55 %) food items for men, respectively, indicating that both questionnaires estimated median values reasonably well. Median Spearman's correlation coefficients with the DR were 0·43 (range: -0·09 to 0·77) for DHQ1 and 0·44 (range: 0·14 to 0·82) for BDHQ1 in women, with respective values of 0·44 (range: 0·08 to 0·87) and 0·48 (range: 0·22 to 0·83) in men, indicating reasonable ranking ability. Similar results were observed for mean values of the four DHQ and BDHQ. CONCLUSIONS: In terms of food intake estimates, both the DHQ and the BDHQ showed reasonable validity.
OBJECTIVE: To compare the relative validity of food group intakes derived from a comprehensive self-administered diet history questionnaire (DHQ) and a brief-type DHQ (BDHQ) developed for the assessment of Japanese diets during the previous month using semi-weighed dietary records (DR) as a reference method. DESIGN: Between November 2002 and September 2003, a 4 d DR (covering four non-consecutive days), a DHQ (150-item semi-quantitative questionnaire) and a BDHQ (fifty-eight-item fixed-portion-type questionnaire) were completed four times (once per season) at 3-month intervals. SETTING: Three areas in Japan: Osaka, Nagano and Tottori. SUBJECTS: Ninety-two Japanese women aged 31-69 years and ninety-two Japanese men aged 32-76 years. RESULTS: Median food group intakes were estimated well for approximately half of the food groups. No statistically significant differences were noted between a 16 d DR and the first DHQ (DHQ1) or between the DR and the first BDHQ (BDHQ1) in fifteen (44 %) and fifteen (52 %) food items for women and in fourteen (41 %) and sixteen (55 %) food items for men, respectively, indicating that both questionnaires estimated median values reasonably well. Median Spearman's correlation coefficients with the DR were 0·43 (range: -0·09 to 0·77) for DHQ1 and 0·44 (range: 0·14 to 0·82) for BDHQ1 in women, with respective values of 0·44 (range: 0·08 to 0·87) and 0·48 (range: 0·22 to 0·83) in men, indicating reasonable ranking ability. Similar results were observed for mean values of the four DHQ and BDHQ. CONCLUSIONS: In terms of food intake estimates, both the DHQ and the BDHQ showed reasonable validity.
Authors: Y Osuka; S Fujita; N Kitano; K Kosaki; J Seol; Y Sawano; H Shi; Y Fujii; S Maeda; T Okura; H Kobayashi; K Tanaka Journal: J Nutr Health Aging Date: 2017 Impact factor: 4.075
Authors: T Ohkuma; H Fujii; M Iwase; Y Kikuchi; S Ogata; Y Idewaki; H Ide; Y Doi; Y Hirakawa; N Mukai; T Ninomiya; K Uchida; U Nakamura; S Sasaki; Y Kiyohara; T Kitazono Journal: Diabetologia Date: 2012-10-13 Impact factor: 10.122