18 Questions
Who developed the survey instrument used to collect household-level data?
Disaster experts from academia, the government, and NGOs in the Philippines
How was the survey conducted in terms of data collection?
Face-to-face with adult household members
How many interviewers were involved in conducting the survey?
165
In how many languages were the survey instrument translated into?
5
What was the role of supervisors in overseeing the survey?
Monitoring the study full-time, observing live interviews, and conducting surprise checks
Which market research agency was involved in the data collection process?
Kantar TNS
How were participants selected for the survey?
Participants were selected using a nationally representative sample of randomly selected adults aged 18 years old and above.
When did data collection for the survey take place?
Data collection took place between March 10, 2017 and April 9, 2017.
What was the response rate of the survey?
The survey had a 42.5 percent response rate.
How long did it take to complete the survey?
It took approximately 1.5 hours to complete the survey.
What reason did some respondents give for refusing to take the survey or dropping out during the interview?
Some respondents cited the length of the survey as a reason.
Was a representative sample achieved despite some respondents dropping out?
Yes, a representative sample was still achieved.
What was the minimum percentage of interviews that supervisors observed for each interviewer?
10 percent
How were cities and municipalities selected in the first stage of sampling?
Random selection
What method was used to select barangays for sampling points?
Probability proportional to population size (PPS)
How were barangays classified as urban or rural?
Philippines Statistics Authority guidelines
What method was used to select eight sample households?
Interval sampling
What was the total response rate of the surveys?
42.5 percent
Study Notes
Sampling Methodology
- A random selection of cities and municipalities was taken in each region, with 10 cities/municipalities selected per region using probability proportional to population size (PPS).
- Barangays (Philippines' smallest political unit) were classified as urban or rural using Philippines Statistics Authority guidelines.
- Three barangays were selected in proportion to population size for each selected municipality or city.
- Interval sampling was used to select eight sample households.
Household Selection
- In the National Capital Region, a starting street corner was selected at random and every tenth household was sampled.
- In other regions, a random corner was selected and every fourth household was sampled.
Response Rate
- The total response rate was 42.5%, calculated by multiplying the contact rate, cooperation rate, and survey completion rate.
Survey Instrument
- Household-level data were collected using a survey instrument designed through an iterative process with disaster experts from academia, government, and NGOs in the Philippines.
- The survey instrument was translated from English into five languages (Tagalog, Ilocano, Bicolano, Ilonggo, and Cebuano) and back-translated into English.
Survey Administration
- The survey was conducted by 165 trained interviewers using a digital data collection tool, with face-to-face interviews with adult household members.
- Supervisors monitored the study full-time, observing live interviews and conducting surprise checks on the research team.
Survey Limitations
- The survey had a 42.5% response rate, relatively high compared to social sciences standards, but took approximately 1.5 hours to complete, leading to respondent fatigue.
- The response rate may have been affected by the survey's length, with some respondents refusing or dropping out due to its duration.
Test your knowledge on designing survey instruments for collecting household-level data incorporating nominal and ordinal variables. Explore the iterative process involving disaster experts from academia, government, and NGOs. Learn about the development of survey instruments through focus groups and key stakeholder interviews in the Philippines.
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