Collocations for effectiveness - noun

overall
great, high (esp. AmE), increased
maximum
limited
relative
potential
long-term
The drug's long-term effectiveness has yet to be established.

operational, organizational
political
combat (esp. AmE), military
teacher
Exam results are sometimes used as a measure of teacher effectiveness.

clinical, therapeutic, treatment

analyse/analyze, assess, check, determine, estimate, evaluate, examine, gauge, investigate, judge, measure, monitor, study, test
compare
demonstrate, indicate, prove, show
The exam results demonstrated the effectiveness of the teaching.

achieve, ensure
You may need to increase the dose to achieve maximum effectiveness.

maintain
affect, impact, influence
boost, enhance, improve, increase, maximize
decrease, destroy, diminish, hamper, impair, limit, reduce, undermine
lose
The drugs work well at first but gradually lose their effectiveness.

question
Many people questioned the effectiveness of economic sanctions.

effectiveness as
They're doing tests to evaluate the effectiveness of this herb as an antiseptic.

effectiveness in
the effectiveness of penicillin in controlling bacterial infection