Stats ? No stats ? Who really knows what these things do to us - now or in the future. As far as I am concerned, the medical profession is so driven by the dollars of the chemical companies. Money makes money. I refused them (with the blessing of the oncologist) and am still here 7 years later. What will be will be. Go with your mind and body - but don't regret any decision. Life is short at times, enjoy being as healthy as you can however you can. To me the quality of life was far more attractive than the length of life. All the best.