Abstract: Methods, systems, and computer-readable media for de-identifying information are described. The information de-identified using the described methods may include an information record having identifiable elements capable of identifying an individual. De-identified records may be generated by replacing identifiable elements with non-identifiable elements that may not identify the individual. Non-identifiable elements may include a secondary alias generated based on an alias pattern. In general, an alias pattern is a non-identifiable element generated based on modifying an identifiable element. A secondary alias may be created based on an alias pattern. In this manner, de-identified records may include de-identified elements (i.e., secondary aliases) that were not generated directly from identifiable elements, while allowing the records to still be aggregated and matched with related records.