The phrase "are reported much less" is correct and usable in written English.
It can be used when discussing the frequency or prevalence of reports regarding a particular subject in comparison to others.
Example: "While some issues dominate the headlines, environmental concerns are reported much less in mainstream media."
Alternatives: "are reported significantly less" or "are reported far less".
Furthermore, mogamulizumab, a monoclonal antibody against adult T cell leukemia/lymphoma (ATL) was reported much less effective, compared with imatinib.
Headache yesterday was reported much less frequently in Ethiopia (6.4% adjusted) than Zambia (19.1% adjusted [17, 18]).
Higher volumes were reported much less frequently.
Individual factors such as not knowing where to go, immobility or health being too deteriorated to enable the person to consult were reported much less often.
However, diarrhea was reported much less frequently in 2005 than 2008 (16% and 21% respectively), despite data collection during similar timeframes for both survey years.
Although other food sources (e.g., donations by churches, NGOs, and others) were reported much less frequently in all regions, these were somewhat less prevalent in the North (8.1%).
In terms of musculoskeletal abnormalities, kyphosis/gibbus was the only abnormality present in the majority (70.0%) of patients with Hurler phenotype, and it was reported much less frequently in patients with Hurler Scheie (33.5%) and Scheie (21.3%) phenotypes.
Actually, such measures have been reported much less often, e.g. Weir (1996) gives formulae for up to four loci, and Sabatti and Risch (2002) give a measure based on excess of heterozygosity or of homozygosity.
In addition, he would seldom tell his readers about the specific problems that led to the work on which he was reporting, much less inform them of any larger project he thought he results might further.
However, the combination of plasmon within III-V solar cells has been rarely reported, much less in III-V NWAs.
