IntroductionNovel data platforms are needed to expedite the linkage of geospatial and natural environment data with longitudinal population study(ies) (LPS) data. However, the intrinsic relationship between geospatial data and participant identities raises confidentiality concerns amongst participants which need to be accommodated within platform designs to ensure acceptable data use.
 Objectives and ApproachWe aimed to establish generalisable mechanisms for linking spatial records into a cohort study LPS databank. Using ‘Data Safe Haven’ (Burton et al. 2015) approaches we developed a pipeline of technical processes (e.g. geocoding participants’ residential and school address records, developing an ‘engine’ for linking exposure data to LPS data), which we tested for participant acceptability (through a focus group testing acceptable use of personal identifiers in this context) and tuned to meet regulatory requirements (e.g. privacy impact assessments, information security accreditation). We demonstrated our approach through an exemplar investigation assessing in utero NO2 exposure with later childhood respiratory outcomes.
 ResultsParticipants’ expressed clear expectation
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