The phrase "are however offset" is correct and usable in written English.
It can be used to indicate that certain factors or elements are counterbalanced or mitigated by others, often in a discussion of pros and cons or advantages and disadvantages.
Example: "The benefits of the new policy are however offset by the increased costs associated with its implementation."
Alternatives: "are nonetheless countered" or "are still balanced out".
These gains are, however, offset by the gender inequalities that persist on so many critical fronts.
Operating losses are, however, offset by a substantial cash position.
"These high performers are, however, offset by a disproportionate number of adults who score at the lowest level".
"These high performers are, however, offset by a disproportionate number of adults who score at the lowest level". In terms of math scores, "I think a decline is real," Carr said.
These important limitations are however offset by having measured height on representative samples of women from a large cross-section of low- to middle-income countries allowing a rich description of the global and country-specific changes and patterning of adult height, thus allowing insights into the level of inequalities in population health across and within countries.
These advantages are, however, offset by difficulty in generalising our findings to those in other age groups and from other geographical areas.
(The reduction in benefits while working is, however, offset by increased benefits at full retirement age).
Those were, however, offset by an increase in profits from its 33.1% stake in publishing company Top Right Group from £16.8m to £22m.
The reduced spending on hospitalizations was, however, offset by an increase in spending on pharmaceutical products and out-patient trips to the doctor.
The advantage of not having a heat sink is, however, offset by the fact that the LEDs require a substantial power source.
The prosperity and order in the southern part of the country were, however, offset by outbreaks of lawlessness in Al-Jazīrah, notably the rebellion of the Bedouin Walīd ibn Ṭarīf, who defied government forces between 794 and 797.
