Here is a link to the more updated version - which is definitely more thorough from what I've read... 
"Although previous research has indicated a link between high blood pressure, also referred to as hypertension, and analgesic use, those analyses failed to take into account drug doses and the reasons for their use, Dr. John P. Forman and colleagues note in their report the medical journal Hypertension." http://www.nlm.nih.gov/medlineplus/news/fullstory_26330.html