The phrase "are only cost effective" is correct and usable in written English.
It can be used when discussing the financial efficiency of a product, service, or solution in comparison to alternatives.
Example: "These new energy-saving appliances are only cost effective if used consistently over time."
Alternatives: "are solely economical" or "are merely budget-friendly".
We have shown that pandemic vaccination is only cost effective in severe pandemics, high vaccine effectiveness, and low vaccine cost.
Grid electricity is only cost effective in areas with a population density of at least 50 people per square meter," Asanzi said.
Since adjusting the machines for the size and shape of a title takes a few minutes of human labor before printing begins, print-on-demand production is only cost effective if a half-dozen copies are printed at once.
For example, distribution of condoms as a prevention strategy, is only cost effective if the condoms are distributed to specific at-risk groups (Fleßa 2003).
In the scenario where the next pandemic occurred in 10 years and vaccine shelf-life was 5 years, it is evident that long term stockpiling of vaccines is not cost-effective in the mean scenario even with 100% vaccine efficacy and strain matching, and is only cost effective at the 5th percentile with 100% vaccines efficacy and up to 20% strain mismatch.
Unfortunately, 1 in 3 women, and 1 in 12 men will suffer an osteoporotic fracture in their lifetime, however, the investigation and treatment of Osteoporosis is only cost effective in high risk populations.
A cost-utility analysis for the long-term treatment of OA or RA has suggested that the use of the first-generation COX-2 inhibitors rofecoxib or celecoxib is only cost effective in patients with a previous bleeding ulcer compared with the nonselective NSAID naproxen (Spiegel et al. 2003).
It has been suggested that telemedicine is only cost effective when the distances involved are relatively large [ 22] ; the inclusion of urban and rural arms of the trial, both of which achieved satisfactory levels of recruitment, should provide information to test this hypothesis.
In layman's terms, this ensures that calls made on its network are only cost-effective but also that they sound good.
HER2-targeting agents are expensive medicines and are only cost-effective if used correctly.
Policy initiatives that encourage family care giving are only cost-effective if informal care does indeed reduce expenditure on elderly care.
