The phrase "and more ineffective" is correct and usable in written English.
It can be used to describe something that is not only ineffective but also has additional degrees of ineffectiveness compared to something else.
Example: "The new policy has proven to be not only ineffective but more ineffective than the previous one."
Alternatives: "even less effective" or "more counterproductive".
Labour's response fell short of the mark and its plans to build five new titan prisons could mean more not less people sent to prison, and on more ineffective short term sentences.
Here, we applied anodal tDCS over SMA together with a larger and presumably more ineffective electrode (cathode) over PFC.
Some studies about migraineurs indicated migraine to be associated with more life stressors which are often appraised as threatening and coped in more ineffective ways and indicated that migraineurs assess stressful life events worse and use less effective coping styles compared with the non-migraineurs [ 11- 14].
White replaced Armando Benitez in the 10th, and he was more ineffective than he had been at any time since the Mets obtained him last month from Tampa Bay.
"The more we do to avoid risk and protect our members from tough votes, the more ineffective and polarized the institution becomes.
In case of transportation congestion problems, the formal planning proved to be even more ineffective and unpopular.
As a result, in June, more ineffective permanent and probationary teachers will be ushered out of this District--so better teachers will not be laid off.
Mr. Rothkopf's book argues that on many of the most critical issues of our time, the influence of all nation-states is waning, the system for addressing global issues among nation-states is more ineffective than ever, and therefore a power void is being created.
Indeed, the use of such agents to decrease the incidence of embolic events (which are already rare relative to the number of procedures performed) may be accompanied by increased bleeding complications or more ineffective embolisation procedures (and therefore poor clinical outcomes) that rely on inducing local vessel thrombosis as well as physical occlusion.
