This was done by calculating the ratio of the average obtained with the single-item measure to that obtained with the eight-item measure.
计算1项指标的平均值与8项指标的平均值之比即可。
2
Data from the World health Survey were used to compare estimates of average annual out-of-pocket spending on health care derived from a single-item and from an eight-item measure.
全球健康调查的数据用于对比1项和8项指标的平均每年花费的预算外医疗开支估值。
3
A study by online survey firm Vivodi for PriceMinister showed eight out of 10 people would be happy to receive a used item as a gift and that younger consumers were more open to the idea.