Regarding the Handbook of Health Economics by Mark V. Pauly, Thomas G. McGuire, and Pedro Pita Barros (2012).In the first chapter "Health Care Spending Growth" and the second chapter "Causes and Consequences in Regional Variations in Health Care." by reading these chapters how can someone summarize the increased national income that gets spent on health care.

1. how can someone summarize these articles in one paragraph providing a research question and hypothesis, and some identification method and summarize findings. Explain in detail.

2. how can someone evaluate these article. How can they asses the weaknesses and strengths. Are there any endogenous variables in these two articles? Discuss the context of the articles. Explain.