In L.A. County, Beverly Hills residents used 286 gallons per person daily, while Compton residents used 65. In posh parts of northern San Diego County, residents on average used more than 580 gallons of water a day in September.he heaviest water users, the data showed, used more than 10 times as much as those who used the least. Statewide, residents in some water districts used an average of more than 500 gallons per capita a day, while others used as little as 46 gallons.
PSA doubling time in this group of patients does not play a primary role. Q. Are you suggesting that the standard definition most people use, based on two or three data points, is probably not reliable?
Change in PSA levels over time can be used to assess both cancer risk and aggressiveness of the particular tumor. PSA velocity is defined as an absolute annual increase in serum PSA (ng/mL/year). PSA doubling time is defined as the exponential increase of serum PSA over time and indicates a relative change. These two measures may have a prognostic role in patients that are being treated for prostate cancer.