Convenience Sampling

Is a 'convenience' sample useful for estimating immunization coverage in a small population?

Rapid survey methodologies are widely used for assessing immunization coverage in developing countries, approximating true stratified random sampling. Non-random ('convenience') sampling is not considered appropriate for estimating immunization coverage rates but has the advantages of low cost and expediency. We assessed the validity of a convenience sample of children presenting to a travellin...

Sampling Considerations for Disease Surveillance in Wildlife Populations

Disease surveillance in wildlife populations involves detecting the presence of a disease, characterizing its prevalence and spread, and subsequent monitoring. A probability sample of animals selected from the population and corresponding estimators of disease prevalence and detection provide estimates with quantifiable statistical properties, but this approach is rarely used. Although wildlife...

Social interaction, convenience and customer satisfaction: The mediating effect of customer experience

The present study is an effort to investigate the impact of both convenience and social interaction on customer satisfaction and the mediating role of customer experience. A structured questionnaire was used to collect data (n1⁄4840) using systematic sampling from department store shoppers of age 18 years and above in India. Multivariate data analysis techniques like Exploratory Factor Analysis...

Quality of Artemisinin-Based Combination Formulations for Malaria Treatment: Prevalence and Risk Factors for Poor Quality Medicines in Public Facilities and Private Sector Drug Outlets in Enugu, Nigeria

BACKGROUND Artemisinin-based combination therapies are recommended by the World Health Organisation (WHO) as first-line treatment for Plasmodium falciparum malaria, yet medication must be of good quality for efficacious treatment. A recent meta-analysis reported 35% (796/2,296) of antimalarial drug samples from 21 Sub-Saharan African countries, purchased from outlets predominantly using conveni...

Comparing two sampling methods to engage hard-to-reach communities in research priority setting

BACKGROUND Effective community-partnered and patient-centered outcomes research needs to address community priorities. However, optimal sampling methods to engage stakeholders from hard-to-reach, vulnerable communities to generate research priorities have not been identified. METHODS In two similar rural, largely Hispanic communities, a community advisory board guided recruitment of stakehold...

Convenience Sampling