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Touted as ‘the richest source of information on international migration’, the IPS samples around 250,000 people entering and leaving the main British air and sea ports
Touted as ‘the richest source of information on international migration’, the IPS samples around 250,000 people entering and leaving the main British air and sea ports
IPS is the primary source of information for the Government’s Total International Migration (TIM) estimates
Issues:
Seasonally variable sample survey
Misses many asylum seekers and their dependents
Only provides information on the intentions of respondents rather than their final actions
Anyone using primary unit data from the ESDS needs to be especially wary of seasonal adjustment issues
Notes:
Criticised for being seasonally variable
Despite being used for TIM - In recent years attention has been drawn to the significant underestimation of Eastern European Migrants.