IMPIC — Immigration Policies in Comparison (1980-2018)IMPIC 移民政策比较数据库（1980–2018）

IMPIC (Immigration Policies in Comparison) measures de jure immigration policies of 35 OECD countries from 1980 to 2018 across five policy dimensions (control, eligibility, conditions, security and rights), coded from official legislation and international agreements. This export keeps the overall immigration policy index (immpol, higher = more restrictive) and the overall control dimension (cont).

IMPIC（移民政策比较数据库）基于各国立法与国际协定，从控制、资格、条件、保障与权利五个维度衡量 35 个 OECD 国家 1980–2018 年的移民政策（法理口径）。本导出保留总体移民政策指数（immpol，越高代表越严格）与总体控制维度（cont）。