23 Health-Adjusted Life Expectancy: Concepts and Estimates J. A. Labbe 1 Introduction ........................................................................ 418 2 Background ......................................................................... 418 2.1 Health Expectancies (HE) ............................................................ 418 2.2 Health-Adjusted Life Expectancy (HALE) ........................................... 419 2.3 Calculating Hale ....................................................................... 419 3 Hale Estimation .................................................................... 422 4 Conclusion .......................................................................... 423 Summary Points .................................................................... 423 # Springer Science+Business Media LLC 2010 (USA)