Methods for associating healthcare records in healthcare databases with an individual are provided. One or more attribute types are located in first and second records. The one or more attribute types being associated with the individual. A weighted score is determined for the located at least one attribute type based on a comparison of the located at least one attribute type in the first record and the located at least one attribute type in the second record. The weighted score indicates a likelihood that the located at least one attribute type in the first and second records are both associated with the individual. A confidence is provided and is associated with the first and second records based on the weighted score. The confidence score indicates a likelihood that both the first and second records are associated with the individual.