A new study Portable Oxygen Concentrator Market Shares, Strategy, and Forecasts, Worldwide, 2013 to 2019. The 2013 study has 464 pages, 187 tables and figures. Worldwide markets are poised to achieve continuing growth as the aging population worldwide needs homecare oxygen treatment. Older people develop COPD and other respiratory conditions where oxygen is able to improve the quality of the life in a dramatic manner. Portable devices have become affordable and support a mobile lifestyle even while on oxygen.