Tyrovolas Stefanos, Pounis George, Bountziouka Vassiliki, Polychronopoulos Evangelos, Panagiotakos Demosthenes B
Department of Dietetics-Nutrition Science, Harokopio University, Athens, Greece.
J Nutr Elder. 2010 Jul;29(3):311-24. doi: 10.1080/01639366.2010.499096.
The aim of the present work was to evaluate the repeatability and the validity of a short food frequency questionnaire (FFQ) that could be used for older people living in Mediterranean areas. The semi-quantitative FFQ included questions regarding the frequency of consumption of the main food groups and beverages typically consumed in the Mediterranean areas as well as some questions regarding eating habits of older persons. During 2006-2007, for the repeatability assessment (within 10-30 days), 150 individuals (51 +/- 17 yrs, 40% males) were studied, while another 190 individuals (74 +/- 9 yrs, 52% males) were enrolled for the validation purposes. Agreement of the FFQ with the 3-day food records was evaluated using the Bland-Altman method and the Kendall's tau-b coefficient. Repeatability was tested using the Cohen's kappa coefficient. Between 3-day food records and the FFQ, good agreement for alcohol (tau-b = 0.64, p < 0.001) was found, while moderate agreement for food and beverage groups of greens (tau-b = 0.32, p < 0.001), fruits (tau-b = 0.35, p < 0.001), cereals (tau-b = 0.61, p < 0.001), sweets (tau-b = 0.51, p < 0.001), and coffee (tau-b = 0.58, p < 0.001) was observed. Low, but still significant, agreement for fish (tau-b = 0.21, p = 0.001), legumes (tau-b = 0.23, p < 0.001), vegetables (tau-b = 0.23, p < 0.001), pasta (tau-b = 0.25, p < 0.001), potatoes (tau-b = 0.17, p = 0.006) and meat consumption (tau-b = 0.14, p < 0.001) were also found. The FFQ was also valid regarding the estimation of macronutrients and energy intake. Sensitivity analyses by sex, age category (<or= or > 75 yrs), and education status showed similar validity of the FFQ in each subgroup, except for elders older than 75 years. The repeatability of the FFQ was fair in all foods tested (Cohen's kappa coefficients varied between 0.15-0.39, p-values < 0.05). The suggested FFQ seems to be a reasonably valid and repeatable measure of dietary intake and can be used in older persons living in the Mediterranean areas.
本研究的目的是评估一种简短食物频率问卷（FFQ）的重复性和有效性，该问卷可用于居住在地中海地区的老年人。半定量FFQ包括有关地中海地区常见的主要食物组和饮料消费频率的问题，以及一些有关老年人饮食习惯的问题。在2006 - 2007年期间，为进行重复性评估（在10 - 30天内），研究了150名个体（51±17岁，40%为男性），而另外190名个体（74±9岁，52%为男性）被纳入用于验证目的。使用Bland - Altman方法和肯德尔tau - b系数评估FFQ与3天食物记录的一致性。使用科恩kappa系数测试重复性。在3天食物记录和FFQ之间，发现酒精的一致性良好（tau - b = 0.64，p < 0.001），而绿叶蔬菜（tau - b = 0.32，p < 0.001）、水果（tau - b = 0.35，p < 0.001）、谷物（tau - b = 0.61，p < 0.001）、甜食（tau - b = 0.51，p < 0.001）和咖啡（tau - b = 0.58，p < 0.001）的食物和饮料组的一致性为中等。鱼类（tau - b = 0.21，p = 0.001）、豆类（tau - b = 0.23，p < 0.001）、蔬菜（tau - b = 0.23，p < 0.001）、面食（tau - b = 0.25，p < 0.001）、土豆（tau - b = 0.17，p = 0.006）和肉类消费（tau - b = 0.14，p < 0.001）的一致性较低，但仍具有显著性。FFQ在估计宏量营养素和能量摄入方面也是有效的。按性别、年龄类别（≤或>75岁）和教育程度进行的敏感性分析表明，除了75岁以上的老年人外，FFQ在每个亚组中的有效性相似。FFQ在所有测试食物中的重复性一般（科恩kappa系数在0.15 - 0.39之间，p值<0.05）。建议的FFQ似乎是一种合理有效的、可重复的膳食摄入量测量方法，可用于居住在地中海地区的老年人。
