The phrase "a sample was drawn" is correct and usable in written English.
It can be used in contexts related to research, statistics, or experiments where a sample is selected from a larger population for analysis.
Example: "In the study, a sample was drawn from the population to assess the effectiveness of the new treatment."
Alternatives: "a sample was collected" or "a sample was taken".
Both in the pre- and post-training phase, a sample was drawn from consecutive patients of the 17 participating GPs.
For each of the selected countries a sample was drawn aiming to represent the countries driving licence holders.
Within the framework of the Research on Processes of Social and Cultural Integration (SCIP), a sample was drawn of 1397 first generation recently immigrated Romanian migrants aged 18 65, registered in the municipalities between January, 1, 2013 and October, 1, 2014.
In September 2010 a sample was drawn by Statistics Netherlands (CBS) among migrants aged between 18 and 65 years who had been entered in the Municipal Personal Records Database (GBA) of their municipality of residence for between September 2009 and September 2010 and who originated from Bulgaria or Poland and who held the nationality of the respective country of origin.
At the end of HD a sample was drawn for assay of Factor Xa.
Normal free breathing activity filled the bag, from which a sample was drawn and transferred to an evacuated tube [ 17].
Additionally, a sample is drawn to allow for the estimation of population counts for variables that are not included in the registers.
A sample is drawn from a large panel of volunteers, and the results are weighted to reflect the demographics of the population of interest.
After an informed consent, a blood sample was drawn at the local cancer society clinics in Helsinki and Tampere.
A convenience sample was drawn from a university in central Taiwan.
After a written informed consent, a blood sample was drawn.
