Friel S, Nelson M, McCormack K, Kelleher C, Thriskos P
National Nutrition Surveillance Centre, Department of Health Promotion, National University of Ireland, Galway, Republic of Ireland.
Public Health Nutr. 2001 Oct;4(5B):1143-7.
Irish participation in the EU-supported DAta Food NEtworking (DAFNE) project required compliance with the overall aims and objectives. The Irish Household Budget Survey (HBS) expenditure data had to be transformed into a format compatible with the collaborative effort, by converting them into quantities of foodstuffs available per person per day.
The Irish 1987 HBS expenditure data on all commodities for 7705 households in the Republic of Ireland, collected using a 14-day diary kept by all members of the household aged 15 years and over.
Following identification of 188 food items in the HBS dataset, retail prices per unit weight were sought for each food. Adjustment of prices, collected from a number of different sources, was made to those of 1987 using the Consumer Price Index. Simple models were used to estimate household food availability through application of the adjusted retail prices per unit weight to the expenditure data. The household level data were converted to food availability per person per day. An internal validation of quantities estimated using the retail prices was made using the 12 foodstuffs for which the Irish HBS collects expenses and quantities.
The comparison of quantities published by the Irish Central Statistics Office for 12 foodstuffs in the Irish 1987 Household Budget Survey with the quantities estimated using equivalent expenditure data and corresponding retail prices showed agreement, with less than a 10% margin of error for 10 of the foods.
In spite some difficulty in converting HBS food expenditure data into food availability per person per day, the DAFNE approach is potentially useful for Irish nutrition surveillance purposes and for facilitating comparisons of the Irish HBS food data with those of other European countries.
爱尔兰参与由欧盟支持的“数据食品网络”（DAFNE）项目需要符合其总体目标。爱尔兰家庭预算调查（HBS）的支出数据必须转换为一种与合作项目相兼容的格式，即将其转换为每人每天可获得的食品数量。
爱尔兰1987年家庭预算调查的支出数据涵盖爱尔兰共和国7705户家庭的所有商品，这些数据是通过15岁及以上家庭成员记录的为期14天的日记收集的。
在确定家庭预算调查数据集中的188种食品后，为每种食品寻找单位重量的零售价格。从多个不同来源收集的价格数据，利用消费价格指数调整为1987年的价格。通过将调整后的单位重量零售价格应用于支出数据，使用简单模型估算家庭食品供应量。家庭层面的数据被转换为每人每天的食品供应量。利用爱尔兰家庭预算调查收集费用和数量的12种食品，对使用零售价格估算的数量进行了内部验证。
将爱尔兰中央统计局公布的1987年爱尔兰家庭预算调查中12种食品的数量，与使用同等支出数据和相应零售价格估算的数量进行比较，结果显示二者相符，其中10种食品的误差幅度不到10%。
尽管将家庭预算调查的食品支出数据转换为每人每天的食品供应量存在一些困难，但“数据食品网络”方法对于爱尔兰营养监测目的以及促进爱尔兰家庭预算调查食品数据与其他欧洲国家数据的比较可能是有用 的。
