Systems and method for selectively providing information about medical data are provided. A first statistical query based on an input from a first user may be received. A first estimated property based on the first statistical query may be provided to the first user. A second statistical query based on an input from a second user may be received. A first group of users that includes the first user may be selected. It may be determined whether the first group of users includes the second user. In response to a determination that the first group of users does not include the second user, a second estimated property may be provided to the second user, and in response to a determination that the first group of users includes the second user, providing the second estimated property may be forwent.