The phrase "a selected subsample of" is correct and usable in written English.
It can be used when referring to a specific portion of a larger sample that has been chosen for analysis or study.
Example: "In our research, we analyzed a selected subsample of participants to ensure a diverse representation of opinions."
Alternatives: "a chosen subset of" or "a specific sample of".
In order to see if the existence of these costs alone can explain the stockholding puzzle, or if, by the contrary, further explanations should be explored, we look at the risky assets portfolio of a selected subsample of the Spanish households.
Subsequent swabs to detect MRSA colonization were obtained from a selected subsample of patients, who might have differed from those not tested for characteristics related to the outcome.
Necessary survey information on temporal spatial physical patterns of activity and household characteristics can be collected for the entire cohort, and targeted exposure substudies can be performed in a selected subsample of study subjects.
On a randomly selected subsample of 50 patients, an expert panel (a general practitioner (JD), a geriatrician (BB) and a clinical pharmacist (AS), all with research experience in the field) was asked to independently rate the actual clinical importance of the recommendations (i.e., to add the drugs suggested by START to the treatment, or to discontinue the drugs detected by STOPP or Beers).
The inter-rater reliability of the diagnosis of ASD was measured through an independent assessment of a randomly selected subsample of 38 patients by two other psychiatrists.
Cotinine measurements were obtained for most of the eligible non-smoking participants in the Health Survey for England waves 1998 (73%) and 2001 (70%), whereas only a randomly selected subsample of participants received a nurse visit in the 1999 wave and therefore provided a saliva sample (8%).
A randomly selected subsample of 593 subjects underwent a detailed measurement program including serum 25(OH D measurements.
One scorer scored 100% of the data, and a second scorer scored 10% of a randomly selected subsample of the data to identify interrater reliability.
Phthalates were measured in a spot urine sample collected from a randomly selected subsample of NHANES participants using high-performance liquid chromatography and tandem mass spectroscopy, as previously described (Silva et al. 2004).
A randomly selected subsample of 656 participants was offered an MRI scan, of which 503 accepted, and 431 (85.7%) eventually completed.
A randomly selected subsample of 656 participants was offered an MRI scan, which 503 accepted, and 431 (85.7%) eventually completed.
