Quantitative Research



To ensure the highest quality of social science research, YPC adheres to a 10-step research methodology. The application of the methodology is supervised by the experienced staff at the YPC headquarter in Sanaa.

1. Desk Review and Baseline Preparation
Before implementing fieldwork or designing the questionnaire, YPC researchers conduct thorough background research on all issues and subject areas concerning the research objective defined by the client.

2. Questionnaire Design
The collected background information, the objectives of the project, as well as the client's input serve as the basis for the questionnaire design. YPC's knowledge of local circumstances and use of language ensures the effectiveness of the research instrument and maximal research results.

3. Drawing the Sample
YPC chooses a large enough sample size, allowing meaningful analysis across different regions of the country and among different demographic groups. Marginalized groups, especially persons with disabilities, Yemeni youth, women, and urban and rural residents are all covered by the sample. If additional measures are deemed necessary to ensure sufficient interviews are conducted with any particular demographic group, further purposive sampling is employed.

4. Pretesting the Questionnaire
Once the questionnaire is completed, it is pretested in Sana’a and in additional key target areas. The pretest serves to identify any questions that are not easily understood by respondents, any difficulties the enumerators have in gathering the data with the survey instrument, and any additional issues or difficulties.

5. Data collection
For the data collection in the field, primary sampling units (PSUs) are randomly selected (PPS) within each governorate. Enumerators are given a walking and skip pattern to determine in which households the survey should be implemented in. In reporting response rates, YPC accords with all standards established by the World Association of Public Opinion Research and American Association for Public Opinion Research.

6. Quality Controls
All supervisors have long-standing experience in managing and supervising the teams of enumerators and administering the questionnaires in their respective governorates. The supervisor is responsible for managing and supervising the field work, reviewing the field questionnaires, contacting the enumerators on an hourly basis, and keeping the project officers at headquarters directly informed about the whereabouts of the enumerators at all times. The first completed surveys are checked by the YPC headquarters in terms of correct skip patterns, missing data, and legibility. At least 10 percent of the completed surveys are verified by telephone or visits.

7. Data Entry & Processing
All data is entered into SPSS and is available in ASCII or STATA format. The codes for any open-ended questions are developed after the pre-test. Categories for responses are created to encompass all possible answers. To ensure all data is entered correctly, ten percent of all the work returned from each member of YPC’s data entry team is independently verified.

8. Final Report Preparation
After completing the project, YPC prepares a final report which tailored to the needs of the clients, includes all important data.