Article Figures & Data
Tables
- Table 1.
Recruitment strategies: pros and cons
Recruitment method Representative of a larger population? Sampled from definable pool Application of standard methods for calculation of sample size Cost Population based Yes Yes Yes Expensive Purposive recruitment Targets subjects with specific characteristics No No Inexpensive Convenience sampling No No No Inexpensive - Table 2.
Results of sampling and attrition inventory of CEBP research and brief report articles, September 2009–December 2009 (n = 116)
Criteria Status, n (%) Present Absent Not Applicable Response rate 37 (32) 47 (40) 32 (28) Exclusion criteria 55 (47) 49 (42) 12 (11) Enrollee vs. nonenrollee differences 10 (9) 94 (80) 12 (11) Attrition 3 (3) 14 (12) 99 (85) Description of reasons for dropout 2 (2) 15 (13) 99 (85) Dropout vs. completer differences 2 (2) 15 (13) 99 (85)
March 2011
Volume 20, Issue 3
Volume 20, Issue 3
Scientific Bias Arising from Sampling, Selective Recruitment, and Attrition: The Case for Improved Reporting
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