Approximately 10% of the interviewees were re-visited by a field supervisor one or two weeks after the original interview, and a short version of the entire questionnaire was administered for quality control purposes.
The randomisation service is independently administered and quality controlled by the Birmingham Cancer Trials Unit.
This laboratory has participated successfully in a CDC-administered quality-control program (Blood Lead Proficiency Testing Program) for the measurement of lead in whole blood.
The New York Civil Liberties Union recently completed a review of abstinence-only programs in the state and found that they consistently use materials that are medically inaccurate and biased and are administered without adequate quality control or evaluation measures.
Telephone surveys are quicker, less costly, less intrusive to respondents, have comparable response rates, and are easier to administer and maintain quality control with monitoring of interviewers than face-to-face surveys [ 3, 5, 8, 9].
Task 1: Clerical or data management work such as filing; photo-copying; online research; data entry; transcription; data quality control; administering surveys by telephone or in person; and work-related errands.
We did not believe our mercury assay procedures were at fault because they are continually evaluated as part of an international mercury quality control program administered by the Centre de Toxicologie du Québec (Institute National de Santéé Publique, Sainte-Foy, Québec, Canada), which has run the Interlaboratory Comparison Program since 1979.
The quality control for adduct assays was administered by blank and positive controls.
The quality control for blood tests was administered by the National Center for Clinical Laboratory.
The processes were optimized to obtain a product approved to quality control according to a radiopharmaceutical to be administered in a context of a clinical routine.
Following the quality control check, 175 μl hyperpolarised [1-C]pyruvate was administered in situ via a lateral tail vein over approximately 5 s.
