Association Between Breast Cancer Disease Progression and Workplace Productivity in the United States.

Objective: Determine workplace productivity losses attributable to breast cancer progression.

Methods: Longitudinal analysis linking 2005 to 2012 medical and pharmacy claims and workplace absence data in the US patients were commercially insured women aged 18 to 64 diagnosed with breast cancer. Productivity was measured as employment status and total quarterly workplace hours missed, and valued using average US wages.