In cases where useful statistics are lacking, the above approach takes account of the relative economic wellbeing of different regions to permit the correlation of a region's purchasing power with its consumption of mercury containing products.
在缺乏可用统计数据的情况下，上述方法考量了不同地区的相对经济福利，将地区的购买力与其含汞产品消费量联系起来。