When on the mound, he was of questionable effectiveness, allowing 22 hits in 10 innings.

In addition, the agent's "envelope-of-action" and rate of action were of questionable effectiveness.

A face mask, however, is of questionable effectiveness.

However, such approaches are faced with problems of dramatically higher costs and questionable effectiveness.

They cite costs, politics and questionable effectiveness.

The process requires decades to do its job, at great cumulative expense and questionable long-term effectiveness.

As well as being of questionable effectiveness, ads and party political broadcasts can be actively dangerous.

The reasons: Its irreversible nature and questionable effectiveness.

He also says that the system for testing drugs is not rigorous enough, and thus results in the heavy use of medication of questionable effectiveness.

Clearly, a European police corps of this nature raises questions, primarily with regard to its questionable and highly dubious effectiveness.