[Inter-observer agreement and validity of photographic dietary assessment].
[Inter-observer agreement and validity of photographic dietary assessment].
复制标题
[摄影饮食评估的观察者间一致性和有效性]。
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
T. Kawamura
中科院分区：
文献类型：
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作者：
Ayako Suzuki;M. Miyauchi;I. Hattori;Isuzu Egami;K. Wakai;A. Tamakoshi;M. Ando;T. Nakayama;Y. Ohno;T. Kawamura
目的
已经提出了通过提供食物的照片来估计营养摄入量的方法。我们检查了观察者之间的一致性和这种评估日常饮食的方法的有效性。
方法
参加营养学课程的25名家庭成员(13名男性和12名女性，平均年龄+/-SD：47.3+/-5.6岁)进行了四天的饮食摄影和传统的称重饮食记录。对于照相法，两名观察者独立地识别食物，并从照片中估计它们的份量，通过食物成分表将它们转换为能量和营养摄入量。通过观察者间的比率、相关性和变异系数(CV)来评估观察者间的一致性，并以加权的饮食记录作为参考来验证该方法。并对其运行成本进行了计算。
结果
观察者间估计平均每日营养摄入量的比率范围为0.89(镁)至1.14(视黄醇)，中位数为1.03。观察者之间的相关系数每天从0.65(饱和脂肪酸[SFA])到0.92(维生素C)(中位数0.79)，以及个人从0.65(SFA)到0.96(维生素C)(中位数0.78)。每日和个人摄入量的变异系数分别为7.9%(能量)到23.8%(胡萝卜素)(中位数13.3%)，5.2%(能量和镁)到17.8%(胡萝卜素)(中位数8.8%)。在有效性方面，两种方法(照相法/称重饮食记录)的比率从0.96(钾和SFA)到1.11(视网膜和盐)，中位数为1.00。两种方法之间的相关性分布在每天0.40(盐)到0.82(维生素C和视黄醇)之间(中位数0.67)，以及个人基础上从0.47(盐)到0.90(维生素C)(中位数0.74)。变异系数分别为10.5%(能量)至39.6%(胡萝卜素)(中位数16.9%)和6.1%(蛋白质)至20.6%(胡萝卜素)(中位数11.2%)。如果使用带镜头的胶片拍摄25张照片，每顿饭的费用是105日元。
结论
观察者之间的一致性和照相方法的有效性，虽然随营养物质的不同而不同，但普遍可以接受。尽管需要对外出就餐的人进行一些修改，但这种方法似乎是一种有用的饮食记录工具。
PURPOSE
Estimation of nutritional intake from photographs of served meals has been proposed. We examined the inter-observer agreement and validity of this method for assessment of the daily diet.
METHODS
Twenty-five family members (13 men and 12 women, mean age +/- SD: 47.3 +/- 5.6 years) of students in a dietetic course performed both meal photography and traditional weighed dietary records for four days. For the photo method, two observers independently identified foods and estimated their portion sizes from the photographs, converting them into energy and nutrient intake with a food composition table. The inter-observer agreement with the photo method was assessed in terms of inter-observer ratios, correlations, and coefficients of variation (CV), and the method was validated using the weighed dietary records as the reference. Its running cost was also calculated.
RESULTS
The inter-observer ratios for estimation of mean daily nutritional intake ranged from 0.89 (magnesium) to 1.14 (retinol) with a median of 1.03. The correlation coefficients between observers varied from 0.65 (saturated fatty acids [SFA]) to 0.92 (vitamin C) on a daily basis (median, 0.79), and from 0.65 (SFA) to 0.96 (vitamin C) on an individual basis (median, 0.78). The CVs ranged from 7.9% (energy) to 23.8% (carotenc) (median, 13.3%), and from 5.2% (energy and magnesium) to 17.8% (carotene) (median, 8.8%) for daily and individual intake, respectively. Regarding validity, the ratios between methods (the photo method/weighed dietary records) ranged from 0.96 (potassium and SFA) to 1.11 (retinal and salt) with a median of 1.00. Correlations between the two methods were distributed from 0.40 (salt) to 0.82 (vitamin C and retinol) on a daily basis (median, 0.67), and from 0.47 (salt) to 0.90 (vitamin C) on an individual basis (median, 0.74). The CVs ranged from 10.5% (energy) to 39.6% (carotene) (median, 16.9%), and from 6.1% (protein) to 20.6% (carotene) (median, 11.2%), respectively. It was calculated to cost 105 Japanese yen per meal when using a lens-attached film for 25 shots.
CONCLUSIONS
Inter-observer agreement and validity of the photo method, though varying with the nutrient, were generally acceptable. Although some modifications are needed for diners-out, the method appears to be useful as a dietary recording tool.