The phrase "a valuable and efficient" is correct and usable in written English.
You can use it to describe something that is both beneficial and effective in achieving its purpose.
Example: "The new software is a valuable and efficient tool for managing our projects."
Alternatives: "an effective and beneficial" or "a useful and productive".
They said General Gehlen, who was not a good speaker, also valued the younger man's verbal ability and found him a valuable and efficient staff officer.
Conclusion: The Edinburgh Postnatal Depression Scale appears to be a valuable and efficient tool for the identification of patients who are at risk for postpartum depression.
Photocatalyic water splitting with metal oxide heterostructure as photocatalysts has been a valuable and efficient hydrogen production method in recent years.
Therefore, an online pipelining platform that integrates a number of selected tools is a valuable and efficient solution that can meet the needs of related researchers.
Since only the time-dependent codes are now publicly available this is a valuable and efficient alternative to the development of a high-specialised code for the time-independent equations.
PCR assays like the one utilized in the present study can be readily developed for both deletions and duplications, providing a valuable and efficient means of genotyping large numbers of subjects.
A guided self-help treatment might be a valuable and cost efficient strategy to treat employees with mild to moderate depressive symptoms.
Thus, for studies relating to spontaneous metastasis, transplantable models offer a valuable and cost-efficient alternative.
Secondary data may constitute a valuable and cost-efficient alternative to the use of primary data in epidemiologic research [ 7- 9].
Clearly in the setting of established data collection, storage, and participant follow-up, the addition of data collection strategies to fill in periods of the life course that may be particularly important offers a valuable and cost-efficient strategy to uncover details of exposure disease relations.
10 11 The 10-question Edinburgh Postnatal Depression Scale (EPDS) is a validated, valuable and efficient way of identifying patients at risk for perinatal depression.
