The phrase "a triple increase" is correct and usable in written English.
It can be used to describe a situation where something has increased by three times its original amount or value.
Example: "The company's profits experienced a triple increase this quarter, surpassing all expectations."
Alternatives: "a threefold increase" or "an increase by three times".
Infants who were very large for GA (very LGA; above the 97th percentile) had more than a tripled increase in risk of death by asphyxia and malignant neoplasms.
This demonstrates that a reduction of the extracellular pH from 6.0 to 4.5 causes a slight reduction of UmSRT1-dependent transport but a significant, almost triple increase in ZmSUT1-driven sucrose uptake.
It is shown that in methane oxidative dimerization over 1%La2O3/MgOO catalyst at 1123 K in conditions of gas phase process suppression the increase of pressure from 0.1 to 0.8 MPa gives rise to an increase of methane conversion which is accompanied by a more than triple increase of ethylene/ethane ratio.
Valentin wound up with a triple that increased Chicago's lead to 2-0.
It was also the only DTCA sub-category to experience a triple-digit increase (108.98 %) in expenditure (with print DTCA only experiencing a modest 2.18%% increase over the same time period).
Globally, the number of persons aged 60 years or over is expected almost to triple, increasing from 672 million in 2005 to nearly 1.9 billion by 2050.
The crisis, they argue, will come from a "triple whammy of increasing demand on the welfare state and health-care systems, with a decline in tax contributions from an ever-smaller work force".
Proponents of "climate-smart agriculture" claim that their approaches aim to achieve a "triple win" of increasing food security, adaptation and mitigation.
Another group, the National Council for Voluntary Organisations (NCVO), said the past year had been an "annus horribilis" for charities facing a triple whammy of increased demand, rising costs and an unprecedented fall in income.
"Plastic is a triple whammy for increasing coral infections".
