The phrase "are therefore based on" is correct and usable in written English.
It can be used to indicate that a conclusion or statement is derived from previously mentioned information or evidence.
Example: "The results of the study are therefore based on the data collected over the past year."
Alternatives: "are consequently founded on" or "are thus derived from".
Our conclusions are therefore based on a transparent methodology using evidence-based guidelines for systematic assessment of the available literature.
Current tuberculosis control strategies in high HIV prevalent settings are therefore based on limited epidemiological evidence and more evidence is needed from community-based surveys to inform improved policy formulation.
[Note: Delayed recognition results were not available from two participants (one His/His, one Tyr carrier). Behavioral results from the recognition phase are therefore based on 39 participants].
The three cardiologists could not reach a consensus about whether AF was present in the 12-lead ECG in one participant, who was therefore excluded from further analyses which are therefore based on 999 participants.
Offers are therefore based on schools' reference letters, applicants' personal statements, age-16 qualifications, and expected A-level results.
The notes in this section are therefore based on the observations of the authors only.
Our description and conclusions are, therefore, based on our reading of the events.
The indicated signs below of these derivatives when β, γ > 0 are, therefore, based on simulations.
The relations that helped to identify the synonyms are therefore based on spreadsheet data (see "Smart-grid-related glossaries" section).
The causes of the difficult situation faced by young females are therefore based on a very marked gender-specific career choice and restrictive occupational provision for this group.
Both PR n and RE n are therefore based on an understanding and measure of a model's ability to identify true targets.
