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Network size can be an imperfect measure of how likely an individual is to be included in the sample. This dialog estimates each person's personal visibility based on their self-reported degree and the number of their (direct) recruits. It uses the time the person was recruited as a factor in determining the number of recruits they produce.

• ''New variable:' The name of the new variable to be created.
• Use as network size: If checked, the generated visibility will be used as the network size.
• Order: A variable representing the time of each subject's recruitment.

For a detailed discussion of the algorithm please see: McLaughlin, K.R., M.S. Handcock, and L.G. Johnston, 2015. Inference for the visibility distribution for respondent-driven sampling. In JSM Proceedings. Alexandria, VA: American Statistical Association. 2259-2267.