Pew Research Center

Appendix 1: Survey Methodology

The analysis of the experiences and attitudes of the LGBT population in this report is based on a survey conducted April 11-29, 2013, among a sample of 1,197 self-identified LGBT adults, 18 years of ...
CMS Wire

Customer Experience Survey: Calculating the Right Sample Size

Wondering how many people in the United States have a smartphone? If you poll 20 people on the street, your survey won’t be representative of the entire American population. But if you just want to ...
Nature

Psychometric analysis of the Three-Factor Eating Questionnaire-R21: results from a large diverse sample of obese and non-obese participants

The 21-item Three-Factor Eating Questionnaire (TFEQ-R21) is a scale that measures three domains of eating behavior: cognitive restraint (CR), uncontrolled eating (UE) and emotional eating (EE). Data ...
ascopubs.org

Medical Oncologists' Attitudes and Practice in Cancer Pain Management: A National Survey

From a total of 2,000 oncologists, 354 responded to the original questionnaire and 256 responded to one of two subsequent shortened versions (overall response rate, 32%). Responders were ...
Pew Research Center

Appendix A: Survey methodology

About Pew Research Center’s Spring 2025 Global Attitudes Survey Results for the survey are based on a mix of telephone, face-to-face and online interviews ...