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Demographically Identifiable Information (DII) is defined as either individual and/or aggregated data points that allow inferences to be drawn that enable the classification, identification, and/or tracking of both named and/or unnamed individuals, groups of individuals, and/or multiple groups of individuals according to ethnicity, economic class, religion, gender, age, health condition, location, occupation, and/or other demographically defining factors.
Disclosure Risk/Re-Identification Risk occurs if an unacceptably narrow estimation of a respondent’s confidential information is possible or if exact disclosure is possible with a high level of confidence. Disclosure risk also refers to the probability that successful disclosure could occur.
Key Variables: Aso called “quasi-identifiers”, key variables are a set of variables that, in combination, can be linked to external information to re-identify respondents in the released dataset.
Personally Identifiable Information (PII): Also called “direct identifiers”, PII are variables that reveal directly and unambiguously the identity of a respondent, e.g., names, social identity numbers.
Statistical Disclosure Control (SDC): Statistical Disclosure Control techniques are a set of methods to reduce the risk of disclosing information on individuals, businesses or other organizations.
Acknowledgement: The Centre’s work to develop an improved technical infrastructure for the management of sensitive data on HDX was made possible with support from the Directorate-General for European Civil Protection and Humanitarian Aid Operations (DG ECHO). Development of this technical documentation was supported through the United Kingdom Foreign, Commonwealth and Development Office (FCDO)’s COVIDAction programme.