K.E.I. Calculation
I tried to find K.E.I. for keyword "clinical trials"
85,800,000 this is the competition.
I searched in keywordspy.com and got Search Volume: 823,000/mo (only for uS and country specific I am able to get, can you help me in getting for the world)
so (85,800,000 * 85,800,000)/27433 = 2.6835E 11 (excel calculation)
so can I take this as 2.6 as the keyword index value and grade excellent.