The phrase "assuming a prevalence of" is correct and usable in written English.
It can be used when discussing a situation or condition that is based on the belief that something is common or widespread.
Example: "The study was conducted assuming a prevalence of anxiety disorders among adolescents in urban areas."
Alternatives: "given a common occurrence of" or "considering a widespread presence of".
The present study had a power of 0.82 to detect a significant association, assuming a prevalence of migraine = 0.12, a high-risk allele frequency = 0.3, a genotypic relative-risk GA = 1.5, and a genotypic-risk relative-risk AA = 2.
Assuming a prevalence of patients with colorectal neoplasia of 33%% and a true (but unknown) sensitivity on a per-patient basis of 0.85, including 87 patients in the study was sufficient for an expected width of a 95 % Wilson-score CI of 0.25.
An upper GI bleeding odds ratio of 2 could be detected with a power of 80% with 500 cases and 1500 controls (crude power calculation), assuming a prevalence of SSRI use of 4% (alpha error 5%).
Assuming a prevalence of hypertension of 14% in daily workers and an increase to 25% in workers in the night shift, a power of 80% and confidence limits of 95%, the sample size was estimated as 486 to reject the null hypothesis.
The sample size was calculated assuming a prevalence of 1%.
In the UK, for example, based on a single general practitioner (GP) consultation for each case, it costs the National Health Service (NHS) at least £44.1 million (assuming a prevalence of 2%) or £110.3 million (assuming a prevalence of 5%).
The sample size was calculated assuming a prevalence of 1%, with an addition of 30% to compensate for losses.
The sample size was calculated as 185 patients assuming a prevalence of 86% [ 13] with a confidence level of 95%.
Assuming a prevalence of pneumonia and urinary tract infection of 5%, 800 cases of each were expected.
The sample size was determined assuming a prevalence of 48% for psychological distress at the traditional healer's facility (45).
The predictive values for the laboratory were calculated by applying the Theorem of Bayes assuming a prevalence of 54.82% for the year 2005 with the same software.
