bookmark DataSHIELD / Data Aggregation Through Anonymous Summary-statistics from Harmonised Individual-levEL Databases Allows the analysis of sensitive individual-level data from one study. DataSHIELD permits co-analysis of such data from several studies simultaneously without physically pooling them or disclosing any data. It can be applied to post-publication sensitive data analysis or text data analysis and permits to protect privacy data visualisation. The tool does not require the setup of substantial infrastructure. It allows the user to reduce data governance restrictions, and to reduce the time taken for co-analysis.