Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Debt ratio shows a company's ability to handle debt and invest wisely. Trend in a company's debt ratio indicates its ongoing fiscal health and investment quality. Different industries justify varying ...

Equity-to-asset ratio indicates how much of a company is owned versus debt-leveraged. To calculate, divide total equity by total assets; e.g., $4M/$5M = 80%. Compare ratio to industry to assess ...

A PaO2 test measures oxygen pressure in arterial blood to help guide treatment for respiratory issues. This test is part of an arterial blood gas (ABG) test, which also measures other components like ...

Your cholesterol/HDL ratio is your total cholesterol divided by your HDL level. A cholesterol/HDL ratio of below 3.5 is optimal and indicates a very low risk for heart disease. Ratios above 5 to 1 are ...

If you need to resize a photo to fit a specific frame size or dimension, you can easily reduce photo size in the Photos app on your iPhone or iPad. This way, you can avoid manually trimming the edges ...

The British Thoracic Society (BTS) Home Oxygen Guideline provides detailed evidence-based guidance for the use of home oxygen for patients out of hospital. Although the majority of evidence comes from ...

7 Royal Surrey County Hospital NHS Foundation Trust and Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK ...