The phrase "are largely caused" is correct and usable in written English.
It can be used when discussing the primary reasons or factors contributing to a particular outcome or situation.
Example: "The recent changes in climate patterns are largely caused by human activities such as deforestation and fossil fuel consumption."
Alternatives: "are mainly due to" or "are primarily attributed to".
These are largely caused by adults with learning disabilities and older people living longer, and with more complex conditions.
Clearly, the faults are systemic and the misfortunes of the heavily indebted countries are largely caused by the rules that govern the euro.
Non-voters get branded lazy and apathetic when in actual fact low turnouts are largely caused by a dangerous and depressing dislocation from our so-called democratic process.
The tropical conditions on the platforms are largely caused by heat released from the trains' air-conditioning and from acceleration and braking.
Black used a similar approach to develop a drug treatment for stomach and duodenal ulcers, which are largely caused by the stomach's oversecretion of gastric acids.
This summer, to conserve water in readiness for the winter, Kyrgyzstan is actually importing electricity from Tajikistan.Local shortages are largely caused by inefficiencies in Soviet-era infrastructure and a failure to reform state-run energy monopolies.
At a House committee hearing on the issue Wednesday, veterans advocates testified that the VA's own inefficiencies are largely causing these overpayments, but the responsibility for clearing the debt falls to the veterans.
It is our conviction that this difference is largely caused by the large swinging distance of the pins over the bone in external fixation.
The adverse effect of diarrhea is largely caused by inhibition of water absorption in the large intestine.
From the beginning, he has said global warming is happening and is largely caused by humans.
