New data linkages between censuses show that migration flows between Indian reserves and off-reserve areas from 2006 to 2011 and from 2011 to 2016 resulted in negative net migration for Indian reserves, meaning that—overall—more people left Indian reserves than entered them. These results differ from the portrait shown by the retrospective information from the 2011 and 2016 censuses, which indicates positive net migration for Indian reserves. A comparison of the information in the two sources revealed two types of inconsistencies that contributed to the observed differences: (1) inconsistencies in migrant status, and (2) inconsistencies in the origin location of migrants, i.e., the retrospective information about a migrant’s place of residence 5 years earlier does not match the place where the migrant was enumerated in the previous census. Results from this paper suggest that there are limitations to using retrospective information on the place of residence 5 years prior to a census to derive estimates of internal migration flows for small geographic areas, such as Indian reserves. New data linkages are a source of information that can be used to validate and improve these estimates, as well as to derive alternative estimates. However, data linkages also have limitations and require careful preparation before use, particularly when it comes to calculating weights to accurately account for unlinked records.

人口普查之间的新数据联系表明，2006年至2011年以及2011年至2016年之间，印度储备区和非储备区之间的移民流动导致印度储备净迁移为负，这意味着，总体而言，离开印度储备区的人数要多于进入印度储备区的人数。这些结果与2011年和2016年人口普查的回顾性信息显示的肖像不同，后者表明印度储备金的净迁移为正数。对两个来源的信息进行比较后发现，导致观察到的差异的两种类型的不一致：（1）移民身份的不一致，以及（2）移民来源地的不一致，即有关移民居住地的追溯信息5年前的居住地与上次人口普查中所列举的移民地点不符。本文的结果表明，在人口普查之前的5年中使用居住地的回顾性信息来估算印度等保护区等小地理区域的内部移民流动是有局限性的。新的数据链接是信息的来源，可用于验证和改进这些估计以及得出替代估计。但是，数据链接也有局限性，需要在使用前进行仔细准备，尤其是在计算权重以准确说明未链接记录时。新的数据链接是信息的来源，可用于验证和改进这些估计以及得出替代估计。但是，数据链接也有局限性，在使用前需要仔细准备，尤其是在计算权重以准确说明未链接记录时。新的数据链接是信息的来源，可用于验证和改进这些估计以及得出替代估计。但是，数据链接也有局限性，在使用前需要仔细准备，尤其是在计算权重以准确说明未链接记录时。