Yet, when reminiscing later, Mr Semichastny wondered whether the KGB he presided over had lost much of its effectiveness because it was no longer as feared as it had been in the old days.
EFFECTIVENESS -- Because it is impossible to predict which strain of influenza will strike in any given season, this year's vaccine was designed for strains other than Fujian A, the dominant strain this year.
This is of less relevance when considering the use of these equations to support cost-effectiveness analyses because it is the incremental difference in event rates (typically driven by risk factors reported in randomized clinical trials) that is important.
But within the population, vaccines' effectiveness varies widely because it is affected by various factors, including the general health and age of the recipient.
Its effectiveness is limited, however, because it is a relative ranking, is based on self-perception, and can be strongly affected by your mood from day to day.
This comparative effectiveness study is unique because it is designed with considerable input from stakeholders, particularly patients.
This study design is commonly used to evaluate the effectiveness of residency curricula because it is least likely to interfere with clinical work performed by the residents and maximized the likelihood of residents attending all four seminars[ 19].
This was important to enhance the effectiveness of the SICME because it is not unusual for donors from outside, those who are not familiar with context and operations of the insiders, to face difficulties when trying to address the recipients' needs [ 33].
The use of short-term mortality as an effectiveness measure in volume-effectiveness studies has been criticized, however, because it is a rather crude proxy for effectiveness and also a rather uncommon event that may cause problems in statistical modeling [ 13].
