HLSC 2P27 Lec 11. Collecting Quantitative data

Interviews

Researcher verbally asks questions and records participant responses (ensures accuracy and completeness; time consuming, transportation barrier)

Self-administered surveys

Participants complete a questionnaire on their own, either on paper or online (cost and time efficient, anonymity; low participation rates, delayed responses)

Participation rate

Higher rate ensures study population represents the source population

Incentives

Small gifts or entry into a prize drawing can motivate participation

Interviewer bias

Information bias where interviewers systematically question individuals differently

Characteristics of well trained interviewers

Respectful, organized, considerate, articulate, consistent, impartial, honest, careful