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ARR |
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| ? References in periodicals archive |
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According to the American Academy of Family Physicians (AAFP),
"The evidence indicates that neonatal circumcision prevents urinary
tract infections (UTIs) in the first year of life with an absolute risk
reduction of about one percent and prevents the development of penile
cancer with an absolute risk reduction of less than 0. If the new drug is more effective, its comparative
effect can be expressed in terms of either absolute risk reduction (ARR;
or its reciprocal, number needed to treat) or relative risk reduction
(RRR). While
this may be expressed as a highly significant 50 percent relative risk
reduction for mortality, the absolute risk reduction is only 5
percentage points. |
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