Exact(1)
Therefore, spot urine samples, whether first-morning voids or "convenience" samplings, are most generally used for biomonitoring purposes.
Similar(59)
Subjects were recruited and enrolled into the study using a convenience-sampling approach, leveraging public notices (fliers and newspaper advertisements), personal outreach through a local nongovernmental organization (Delmarva Poultry Justice Alliance), and door-to-door inquiries in neighborhoods known to be populated by poultry workers.
Using a convenience-sampling approach, we identified biology faculty members who were content experts and asked them to evaluate each statement and provide feedback on: 1) its scientific accuracy/wording and 2) its importance in terms of what a general biology major should understand by the time he or she graduates.
This study is limited as the sampling approach involved a voluntary convenience sample.
Hospital controls often represent a convenience sample [ 37], and can introduce sampling bias [ 37, 38] as they may reflect caregivers who seek medical care for minor medical issues.
For the quantitative part, both studies did not apply appropriate sampling procedures and used a convenience sample of one [ 58] or four [ 19] practices.
We also used a snowball-sampling technique based on a convenience sampling method [ 16] as FSWs are a hard-to-reach population [ 17].
The study design was based on a convenience sample, and no systematic attempts were made to regulate sampling factors such as time of day, day of the week and location.
However, RDS was used for recruitment because it is a sampling technique known to overcome some of the limitations of convenience sampling [ 27, 28].
First, their sampling methods were various, including multistage sampling [ 29, 31], convenience sampling [ 35], multistage random cluster sampling [ 30], and cluster sampling [ 33].
Additional limitations include the small convenience sample of study participants which prevent us from generalizing these results to Imperial County residents and the single sampling day, which did not enable us to study variability of exposure across days and seasons.
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