The phrase "a primary population" is correct and usable in written English.
It can be used when referring to the main or most significant group of individuals within a specific context, such as demographics, research, or ecology.
Example: "In our study, we focused on a primary population of urban dwellers to understand their health behaviors."
Alternatives: "a main group" or "a key demographic".
For instance, Hua et al. ([2002]) reported that a QTL cluster influences multiple traits (namely, grain per panicle, plant height, and heading date) on chromosome 7 in a primary population.
Putative QTL, G × E and G × G interactions are statistically estimated from a primary population.
Both hospitals are state funded, have a primary population of the under-served, and provide free access to prenatal care.
To overcome this disadvantage, the combined use of a primary population (F2s, RILs, DHLs) and a backcrossed population (CSSLs, SSSLs, ILs) is recommended.
Figure 2 illustrates the roles of a primary population, such as F2 or RIL, and a backcrossed population, such as CSSL or NIL.
Our ICU provides all intensive care services for patients aged over 1 year in a primary population of 256,000 inhabitants.
This study will evaluate the accuracy of serum MMP-9 as a test for colorectal cancer in a primary care population, the target population for screening.
The patient population was derived from a primary care population, and included anxiety disorders and personality disorders that are underrepresented in the literature [ 4, 8- 12].
There is a clear increase in cell death in the primary population at a given time.
Thirdly, a weak point of the analysis is that although we have excluded all in-patients the study-population is still not really a primary care population.
Primary outcome: The proportion of patients diagnosed with CKD from a primary care population of patients aged 60+ years demographically representative of the UK general population.
