Sampling Protocol

Post-Disaster Rapid Assessment Surveillance (Houston)
June 16, 2001

Objective: Rapid assessment of needs for areas hardest hit by the flood.

  • Aim 1: Assess immediate needs of people in the hardest hit areas to facilitate access and ongoing relief efforts.
  • Aim 2: Use the information gathered for future planning.
  1. 10 survey teams – one team leader and 5-6 members.
  2. Surveyors will work in pairs in each sampling tract area.
  3. Brief training on completion of questionnaire before proceeding to sampling sites.
    » Please let people know that we are here for the specific purpose of identifying their needs in order to facilitate ongoing relief efforts. It is important they understand that we need to gather this information from them and other people in their neighborhood in a rapid fashion so we can accomplish this goal.
  4. X number of sampling areas of 30 tracts each (each group of two will complete two tracts).
  5. Start at selected location on key map (key maps provided).
  6. Sample every 7th house (both sides of street).
  7. We need 7 completed responses per tract. If partially completed, mark reason and do not count as completed.
  8. Interview a responsible household member capable of providing valid information based on your judgment.
  9. If house is not occupied, go to next available house in consecutive manner until you reach a respondent, then continue with every 7 houses.  Write down the total number of houses you attempted to survey but were unsuccessful for whatever reason. We will use this information in the report.
  10. Non-English speaking households: If completion is not feasible, go to the next available house in a consecutive manner, and then continue with every 7 houses.
  11. If encounter refuses, go to the next available house in a consecutive manner as above.
  12. If dwelling is a multi-family unit (duplex, four-plex, apartment), only sample one resident and indicate what floor their unit is on.
  13. Do not sample nursing homes or other assisted living facilities or any type of business.
  14. When you get to the end of a street, flip a coin and continue sampling in the direction the head of the coin is facing.
  15. If you get through all the houses in sampling area and have not yet reached 7, double back on the area, and continue with the same sampling format (every 7 houses). If you get to a house already sampled, go to the next available household.

* Modeled from the Tropical Storm Allison Investigation (June 2001). Prepared by CDC and Houston public health officials


Last updated February 14, 2017