O'Hare W P
Demography. 1980 Aug;17(3):341-3.
Evidence which has emerged in the past few years indicates that the relative accuracy of population estimates derived from the ratio-correlation method and the difference-correlation method varies from state to state. In assessing the possible reasons why neither technique is uniformly more accurate, attention is focused on the temporal instability of the statistical relationships between symptomatic indicators and population change. The author concludes that further improvement in population estimates based on regression techniques is likely to be limited until demographers derive means of measuring and adjusting for these temporal changes.
过去几年出现的证据表明，从比率相关法和差异相关法得出的人口估计值的相对准确性因州而异。在评估为何这两种技术都并非始终更准确的可能原因时，注意力集中在症状指标与人口变化之间统计关系的时间不稳定性上。作者得出结论，在人口统计学家找到测量和调整这些时间变化的方法之前，基于回归技术的人口估计值的进一步改进可能会受到限制。
