Published openings, with a 44 percent effectiveness rating, are the most significant way of learning about an opportunity for those earning less than $ 60,000. (julliengordon.com)
One small item I find particularly handy is the oil light indicator which tells you what percent effectiveness your oil is at so you know when to change it. (autolist.com)
FDA - approved pharmaceuticals for alleviating angina have about a 55 percent effectiveness level in randomized controlled trials; the placebo runs about 45 percent. (discovermagazine.com)