The phrase "a fraction of individual" is not correct in standard written English.
It should be "a fraction of individuals" to refer to a portion of a group of people.
Example: "A fraction of individuals in the study reported experiencing similar symptoms."
Alternatives: "a portion of individuals" or "a segment of individuals".
Since only a fraction of individuals with Alzheimer's ever receive a diagnosis, and treatment is frequently delayed, the average length of treatment in general practice is less than six months.
The increasing rates of opioid use disorder and resulting overdose deaths are a public health emergency, yet only a fraction of individuals in need receive treatment.
Recent work has proposed optimal post-processing methods that randomize classification decisions on a fraction of individuals in order to achieve fairness measures related to parity in errors and calibration.
However, there are situations when a fraction of individuals are not expected to experience the event of interest, that is, those individuals are cured or not susceptible.
However, there are situations for which a fraction of individuals is not expected to experience the event of interest, that is, those individuals are cured or insusceptible.
We model the emergence of DR assuming that resistance first occurs in a fraction of individuals who are on treatment for active disease, and may then be transmitted to their contacts.
After pre-AIDS, a fraction of individuals develop full-blown AIDS and die, whist others start anti-retroviral therapy (ART) and survive for eight years with very low infectiousness.
It also allows for a purely stochastic factor, in which only a fraction of individuals will actually develop MS, even when they are genetically susceptible and when they experience an environmental exposure "sufficient" for MS to develop given their particular genotype.
A fraction of individuals dies in the early rash state, all others acquire a lasting immunity after recovery.
