In order to reach as large and broadly representative a sample as possible, we employed telephone-based survey methods for recruitment and collection of encounter data.
The participation rate indicates the efficiency of internet panels that use non-probability based sampling methods for participant selection and recruitment and in which response rate has no real meaning [ 29].
Full methods for recruitment, baseline characteristics collection, laboratory procedures have been described elsewhere [6].
Detailed methods for recruitment of patients for the GeoSentinel database are described elsewhere (2 ).
We therefore expanded our methods for recruitment of Pacific women controls in the main study.
A summary of effective and ineffective methods for recruitment and retention is provided.
Also, the methods for recruitment were different in this later time period.
The methods for recruitment and data collection in the ALIVE study have been previously described[ 21].
Personal and program referral (other medical schools) are the most common methods for recruitment at Imperial.
For example, with an offline (i.e., paper based) chain recruitment method participants have a tendency to recruit spatially proximal peers [ 17].
Health system strengthening includes goals for developing an efficient workforce using competency based training methods, mechanisms for supportive supervision, recruitment and deployment of health workers at every level of the health system, and to achieve an appropriate skill mix [ 10].
