Sudden infant death syndrome (SIDS) is the unexpected, unexplained, sudden death of a child younger than one year old.

A descriptive research design was employed through a survey to collect both quantitative and qualitative data. Primary data was collected using questionnaire, key informant interviews and observation.

Exploring the impact of sample size and response rate on data quality for the Crime Survey for England and Wales.

Since the CAHPS program's inception in the mid-1990s, AHRQ has provided guidance on survey design, sampling, and data collection strategies to ensure that survey users have the information they need ...

The survey had a complex sample design constructed to maximize efficiency in reaching Asian American adults while also supporting reliable, national estimates for the population as a whole and for the ...

Poor survey design is damaging the future of the market research industry, with respondents increasingly averse to badly-made and over-long surveys, last week's ASC conference on survey fraud, data ...

Cohort studies are a powerful tool for conducting research in human populations. They are a type of longitudinal study design. Longitudinal studies follow participants over a period of time.

With exception of sample sizes, all figures are weighted, adjusting for both complex survey design and non-response (including non-return of self-completion questionnaires).