Preferably the continuous measures would relate to mental health, physical health, substance use, acculturation, etc. but other measures used in migration research are welcome.
Migration could planned for seekinga better life style, or the "escape of smart brains", as a result of strategic advertisments. On the other hand, migration could be done for merely a surviving purpose, as a result of being in a war-zone, or any other unsafe situation. Therefore, in each condition, measures of the level of truma versus motivation , persistancy, & success could be vary quite a bit. Moreover, the financial status of the migrated group could enfluence the economic stands of original home-country & the new host state, incentified by outsider donors, in which could have an impact on the measurments.