Strides in Development of Medical Education

Published by: Kowsar

Snowball Sampling: A Purposeful Method of Sampling in Qualitative Research

Mahin Naderifar 1 , Hamideh Goli 2 and Fereshteh Ghaljaie 3 , *
Authors Information
1 Department of Nursing, Faculty of Nursing and Midwifery, Zabol University of Medical Sciences, Zabol, IR Iran
2 Department of Nursing, Faculty of Nursing and Midwifery, Zahedan University of Medical Sciences, Zahedan, Iran
3 Community Nursing Research Center, Faculty of Nursing and Midwifery, Zahedan University of Medical Sciences, Zahedan, Iran
Article information
  • Strides in Development of Medical Education: September 2017, 14 (3); e67670
  • Published Online: September 30, 2017
  • Article Type: Research Article
  • Received: November 29, 2016
  • Revised: May 3, 2017
  • Accepted: June 25, 2017
  • DOI: 10.5812/sdme.67670

To Cite: Naderifar M, Goli H, Ghaljaie F. Snowball Sampling: A Purposeful Method of Sampling in Qualitative Research, Strides Dev Med Educ. 2017 ; 14(3):e67670. doi: 10.5812/sdme.67670.

Copyright © 2017, Strides in Development of Medical Education. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License ( which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited
1. Background
2. Methods
3. Results
4. Discussion and Conclusions
  • 1. Abedsaeidi J, Amiraliakbari S. Research Method in Medical Sciences and health. Tehran: Salemi; 2015.
  • 2. Polit DF, Beck CT. Essentials of nursing research: Appraising evidence for nursing practice. Lippincott Williams & Wilkins; 2010.
  • 3. Speziale HS, Streubert HJ, Carpenter DR. Qualitative research in nursing: Advancing the humanistic imperative. Lippincott Williams & Wilkins; 2011.
  • 4. Hejazi S. Sampling and its variants: Introduction to Research Methodology in Medical Sciences. Tehran: Islamic Azad University; 2006.
  • 5. Ahmadzadehasl M, Ariasepehr S. Sampling and samplesize calculation: Basic Principles of Research in Medical Sciences. Tehran: Nour Danesh; 2010.
  • 6. Burns N, Grove SK. The practice of nursing research. Conduct Critique Util. 1993;4.
  • 7. Polit-O'Hara D, Beck CT. Essentials of nursing research: Methods, appraisal, and utilization. 1. Lippincott Williams & Wilkins; 2006.
  • 8. Jalali R. qqualitative research sampling. J Qual Res Health Sci. 2013;1(4):310-20.
  • 9. Sadler GR, Lee HC, Lim RS, Fullerton J. Recruitment of hard-to-reach population subgroups via adaptations of the snowball sampling strategy. Nurs Health Sci. 2010;12(3):369-74. doi: 10.1111/j.1442-2018.2010.00541.x. [PubMed: 20727089].
  • 10. Magnani R, Sabin K, Saidel T, Heckathorn D. Review of sampling hard-to-reach and hidden populations for HIV surveillance. AIDS. 2005;19 Suppl 2:S67-72. [PubMed: 15930843].
  • 11. Hughes M. Buzzmarketing: get people to talk about your stuff. Penguin; 2005.
  • 12. Walsh A, Edwards H, Fraser J. Attitudes and subjective norms: determinants of parents' intentions to reduce childhood fever with medications. Health Educ Res. 2009;24(3):531-45. doi: 10.1093/her/cyn055. [PubMed: 18974070].
  • 13. Charkazi A, Heshmati H, Neirizi O. Explaining smoking among students at Golestan University of Medical Sciences based on basnef model. J Health Syst Res. 2012;7(6):986-93.
  • 14. Heshmati F, Vanaki Z, Mohammadi I. Barrier to forming and implementing academic service partnership in nursing; a qualitative study. 2010.
  • 15. Swallow VM, Allen D, Williams J, Smith T, Crosier J, Lambert H, et al. Pan-Britain, mixed-methods study of multidisciplinary teams teaching parents to manage children's long-term kidney conditions at home: study protocol. BMC Health Serv Res. 2012;12:33. doi: 10.1186/1472-6963-12-33. [PubMed: 22333296].
  • 16. Sasson C, Forman J, Krass D, Macy M, Kellermann AL, McNally BF. A Qualitative Study to Identify Barriers to Local Implementation of Prehospital Termination of Resuscitation Protocols. Circulat Cardiovasc Qual Outcomes. 2009;2(4):361-8. doi: 10.1161/circoutcomes.108.830398.
  • 17. Zaghloul AA, Alsokair MK. Constructing a nurse appraisal form: A Delphi technique study. J Multidiscip Healthc. 2008;1:1-14. [PubMed: 21197327].
  • 18. Zareipour MA, Sadeghi R, Sadeghi Tabatabaei SA, Seyedi S. Effective factors on smoking based on basnef model in male students in tehran medical sciences university in 2009. J Urmia Nurs Midwifery Faculty. 2011;9(1).
  • 19. Lagu T, Kaufman EJ, Asch DA, Armstrong K. Content of weblogs written by health professionals. J Gen Intern Med. 2008;23(10):1642-6. doi: 10.1007/s11606-008-0726-6. [PubMed: 18649110].
  • 20. Schreiber RS, MacDonald MA. Keeping vigil over the profession: a grounded theory of the context of nurse anaesthesia practice. BMC Nurs. 2010;9:13. doi: 10.1186/1472-6955-9-13. [PubMed: 20633286].
  • 21. Mishima SM, Pereira FH, Matumoto S, Fortuna CM, Pereira MJ, Campos AC, et al. Assistance in family health from the perspective of users. Rev Lat Am Enfermagem. 2010;18(3):436-43. [PubMed: 20721434].
  • 22. Cataldo JK, Malone RE. False promises: the tobacco industry, "low tar" cigarettes, and older smokers. J Am Geriatr Soc. 2008;56(9):1716-23. doi: 10.1111/j.1532-5415.2008.01850.x. [PubMed: 18691279].

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