• ICI
  • RTCOM
  • RTC/OM HCBS Measurement Education Modules
  • Module #1: Introduction to Measurement: What is Measurement?
  • Module #2: The Purposes of Measurement
  • Module #3: What Do You Really Want to Know? The Importance of Guiding Questions
  • Module #4: Measurement and HCBS Outcomes
  • Module #5: Introduction to Sampling
  • Module #6: Sampling Methods and Recruitment
    • Learning Objectives
    • Sampling Review
    • Types of Sampling Methods
    • Probability Sampling
    • Non-Probability Sampling
      • Convenience Sample
      • Quota Sample
      • Purposive Sample
      • Snowball Sample
      • Advantages and Disadvantages of Non-Probability Sampling
    • Key Points About Sampling
    • Recruiting the Sample
    • Recruitment Strategies
    • Recruitment Response Rate- Attempted vs. Actual Sample
    • Sampling & Recruitment Problems - Case Study
    • Summary
    • Comprehension Question 1
    • Comprehension Question 2
    • Comprehension Question 3
  • Module #7: Data Driven Decision Making
  • Module #8: Person-Centered Measurement
  • Expert Bios
  • References

    RTC/OM HCBS Measurement Education Modules

    Snowball Sample

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    • Participants identify or recruit others to sample
      • Example: Participants from assisted living facilities are asked to find others in their facilities that are interested in participating. 
    Infographic illustrating what a snowball sample looks like. There one person on the left. That person is connected to two other people. Those two other people are each connected to three other people. Those three other people are each connected to a larger group. Each person adds new people to the sample.

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