(1) The sooner the morning after pill is taken after sex the greater its efficacy .

(2) However, there is very little evidence on the comparative efficacy of classes of drugs.

(3) Our aim was not to assess efficacy of antibiotics but the effectiveness of prescribing strategies.

(4) Drugs with comparable efficacy but better safety profiles later appeared on the market.

(5) Well, I don't have a huge list of examples but I've seen enough to convince me of it's efficacy .

(6) Blood tests may be needed periodically to monitor the treatment and its efficacy .

(7) The report noted that it does not evaluate the actual efficacy of the programs themselves.

(8) There is little information on the efficacy of this treatment

(9) It'll be some time before the safety and efficacy of the other products is proven.

(10) They have had seven matches together, but judgment on their efficacy has been reserved.

(11) Concerns about the safety and efficacy of human cloning, then, do not warrant a ban in law.

(12) The power of transformation or efficacy of the commodity is often a selling point.

(13) The partisanship has even reduced their efficacy as a binding force of our nation.

(14) There was a lack of data on efficacy and adverse effects for all the other drugs.

(15) It has proved efficacy in the treatment of depression and has been shown to be cost effective.

(16) Clinical trials are in progress to assess its efficacy in severe asthma.

(17) In order to have any efficacy whatever, a world organization must be able to override big states as well as small ones.

(18) The trials also showed that efficacy is sustained during a one-year treatment period.

(19) On its own this finding is insufficient to define the relative efficacy of the two treatments.

(20) He argued that monitoring of treatment efficacy would be difficult and expensive.