For a willingness to pay of $50,000 there was 98% certainty of cost effectiveness for a QALY gained or for a MCID in functional independence.
For a willingness to pay of $23,000 there was almost 100% certainty of cost effectiveness for a QALY gained or for a MCID gained in functional independence.
Alternatively for this same time period, for a willingness to pay of zero dollars, there was 97% certainty of cost effectiveness for a QALY gained or for a MCID gained in functional independence.
Senior American counterterrorism and intelligence officials say the lack of certainty about the effectiveness of the latest drone strikes is a sobering reminder of the limitations of American power to deal with the array of new security threats the turmoil of the Arab Spring has produced.
The implication of the low-quality evidence is that further improved quality research (in particular RCTs) is needed to enhance our level of certainty in the effectiveness of SMS interventions to improve adherence to TB treatment.
It is critical, however, that health officials do "not overstate the level of confidence or certainty in the effectiveness of these measures" (18 ).
In addition, we have provided a descriptive report of outcomes that do not have quantitative data and assessed the certainty of the evidence of effectiveness using the GRADE approach.
We will use GRADE as the accepted approach to assessing the certainty of findings of reviews of effectiveness, 21 but since GRADE is not suitable for appraising the certainty of qualitative evidence, we will also use a recently developed method, CerQual (certainty of the quality of evidence).
After 30 years, the Matlab studies have been unable to determine with certainty the effectiveness of interventions.
However, there is no certainty about the effectiveness of RMT in patients affected by these groups of disorders.
What evidence of effectiveness provides is not certainty, but rather a valid reason to believe that if teachers and principals put in the time, effort, and resources to implement a program well, outcomes will be positive.
