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Selection Bias in Web Surveys
Open accessAbstract
Summary: At first sight, web surveys seem to be an interesting and attractive means of data collection. They provide simple, cheap, and fast access to a large group of potential respondents. However, web surveys are not without methodological problems. Specific groups in the populations are under‐represented because they have less access to Internet. Furthermore, recruitment of respondents is often based on self‐selection. Both under‐coverage and self‐selection may lead to biased estimates. This paper describes these methodological problems. It also explores the effect of various correction techniques (adjustment weighting and use of reference surveys). This all leads to the question whether properly design web surveys can be used for data collection. The paper attempts to answer this question. It concludes that under‐coverage problems may solve itself in the future, but that self‐selection leads to unreliable survey outcomes.
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“The reliability and validity of web-based self-reported mental disorder symptom clusters remains ambiguous,71 certainly for the current population”
From Mental Disorder Symptoms among Public Safety Personnel in Canada (2018) · cites this paper as [71]
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“In contrast, the current rates may be inflated because of a self-selection bias of motivated responding by clinically symptomatic persons.71”
From Mental Disorder Symptoms among Public Safety Personnel in Canada (2018) · cites this paper as [71]
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Mayowan, Y., Astuti, E. S., Utami, H. N., & Prasеtya, A. (2025) · Cogent Business & Management · doi:10.1080/23311975.2025.2581345 · Cited by 3
“For questionnaire distribution, online surveys have been widely adopted in research due to advantages such as ease of access, cost-effectiveness and efficiency in reaching large potential populations (Bethlehem, 2010; Yang et al., 2024).”
Castro, C., Dinu, A. I., Doncel, P., Sánchez-Barrera, M. B., Muñoz, M. A., Gómez‐Campos, F. M., García-Fernández, P., Tromp, J. G., & Trógolo, M. (2026) · Virtual Reality · doi:10.1007/s10055-025-01301-2 · Cited by 4
“First, participants were recruited via an online sur - vey, which may introduce self-selection bias (Bethlehem 2010 ).”
Knowledge, Use, and Barriers in Dyslipidemia Management: A Cross-Sectional Survey of Clinicians
Mesquita-Lousada, A., Barbosa, A., Silva, J., D’Oria, M., Silva, D. S., Andrade, J. P., Ribeiro, H., & Rocha-Neves, J. P. (2026) · Journal of Clinical Medicine · doi:10.3390/jcm15072745 · Cited by 3
“Additionally, some healthcare professionals who do not engage with Web 2.0 platforms might have been excluded from the survey, further limiting the generalizability of the findings [49].”
InfluentialAllendorf, V., Rubbenstroth, D., Schlottau, K., Hoffmann, D., Frank, C., Amler, S., Beer, M., Conraths, F. J., & Homeier‐Bachmann, T. (2021) · Zoonoses and Public Health · doi:10.1111/zph.12801 · Cited by 3
“Possible sources of bias in a Web survey are the coverage of Internet use and the sensitivity for self-selection (Bethlehem, 2010).”
BackgroundOnline Research Practice and Integrated Perspectives of Inquiry
Mauceri, S., Faggiano, M. P., & Censi, L. D. (2021) · Advances in knowledge acquisition, transfer, and management book series/Advances in knowledge acquisition, transfer and management book series · doi:10.4018/978-1-7998-8473-6.ch007 · Cited by 3
Moore, H. E., Hill, B., Tanser, F. C., Siriwardena, A. N., Gussy, M. G., Cutts, M., & Spaight, R. (2022) · American Journal of Men s Health · doi:10.1177/15579883221097539 · Cited by 3
“…2022 2020; Henssler et al., 2021; O’Connor et al., 2021; Pierce et al., 2020; Rajkumar, 2020; Wang et al., 2021), which are prone to selection bias (Bethlehem, 2010) or service use records, such as visits to mental health specialists, which only represent experiences of individuals who actively…”
BackgroundSolis-López, S. E., Hernández‐Ruiz, V., Amieva, H., & Ávila‐Funes, J. A. (2023) · Salud Mental · doi:10.17711/sm.0185-3325.2023.017 · Cited by 3
“Which also contributes to reduce the selection bias, as described in other publications (Bethlehem, 2010).”
Ko, M. M., Lee, S. H., Chang, G. T., & Lee, B. (2023) · Frontiers in Nutrition · doi:10.3389/fnut.2023.1247630 · Cited by 3
Adolph, M., Schweikert, D., Wehner, A., Fritsche, A., Bamberg, M., Tischler, K., & Wessels, B. (2024) · Zeitschrift fur Evidenz, Fortbildung und Qualitat im Gesundheitswesen · doi:10.1016/j.zefq.2024.01.004
An improved habitat suitability index for the great crested newt Triturus cristatus
Seccombe, E., & Salguero‐Gómez, R. (2024) · Herpetological Journal · doi:10.33256/34.2.5567 · Cited by 3
Hockenhull, J., Cardwell, J. M., & Verheyen, K. L. P. (2024) · Journal of Equine Rehabilitation · doi:10.1016/j.eqre.2024.100008 · Cited by 3
The Effect of Elite Cues on Policy Attitudes through the Lens of Affective Polarization in Taiwan
Chin, C., & Wang, C. (2024) · Asian Survey · doi:10.1525/as.2024.2121910 · Cited by 3
Improving the reliability of a nonprobability web survey: application to measuring gender pay gap
Huang, Y., & Shlomo, N. (2024) · International Journal of Social Research Methodology · doi:10.1080/13645579.2024.2371238 · Cited by 3
“The development of social media and telecommunication technologies means that web surveys can be launched quickly, distributed in various ways and easily reach a large population (Bethlehem, 2010).”
InfluentialRoll, O., & Geerties, J. L. (2025) · Journal of Revenue and Pricing Management · doi:10.1057/s41272-025-00530-z · Cited by 3
“Additionally, sampling via social networking sites (SNS) increases relevance but may introduce self-selection bias (Bethlehem 2010).”
Random versus self-selected samples of Arkansas anglers: An empirical comparison
Vaske, J. J., Miller, C. A., Feltz, J., & DiCenzo, V. (2025) · North American Journal of Fisheries Management · doi:10.1093/najfmt/vqaf006 · Cited by 3
Pham, M., Craig, B. M., & Rencz, F. (2025) · Quality of Life Research · doi:10.1007/s11136-025-04053-3 · Cited by 4
“First, the use of an online survey may have introduced sampling bias, potentially underrep-resenting individuals with limited internet access or lower digital literacy, thereby affecting the generalizability of the findings [ 47].”
Naga, J. F., Quidato, M., Pascual, M. C. G. P., & Ebardo, R. A. (2025) · SAGE Open · doi:10.1177/21582440251376147 · Cited by 4
“Additionally, using Google Forms disseminated through social media carries the potential for self-selection bias, where participants who are already interested or involved in mental health topics are more likely to respond (Bethlehem, 2010).”
Semenova, T., & Вилкова, К. (2019) · Monitoring obŝestvennogo mneniâ: èkonomičeskie i socialʹnye peremeny · doi:10.14515/monitoring.2019.4.13 · Cited by 3
Li, H., Glecia, A., & Balbuena, L. (2021) · Women s Reproductive Health · doi:10.1080/23293691.2021.1976045 · Cited by 3
Ikegami, K., Yoshimoto, Y., Baba, H., Sekoguchi, S., Ando, H., & Ogami, A. (2022) · JMIR Formative Research · doi:10.2196/35290 · Cited by 3
“Measurement error refers to errors caused by differences in the approach used in responding, even by the same respondent, depending on whether the answers are recorded using other methods (eg, by telephone or interview) or are self-recorded (eg, by the respondent self-completing individually) and whether the answers a…”
MethodNieto‐García, M., & Sit, J. (2022) · Marketing Education Review · doi:10.1080/10528008.2022.2117989 · Cited by 3
“First, future research should be mindful of self-selection bias (Bethlehem, 2010) when recruiting eligible participants for a similar project.”
BackgroundSivaramakrishnan, H., Spray, C. M., Fletcher, D., & Ntoumanis, N. (2022) · International Journal of Sport and Exercise Psychology · doi:10.1080/1612197x.2022.2139854 · Cited by 4
“As such, this bias, commonly noted in questionnaire research (Bethlehem, 2010), may have in fl uenced the present fi ndings.”
BackgroundChesterton, P., & Skidmore, N. (2022) · Physiotherapy Practice and Research · doi:10.3233/ppr-210619 · Cited by 3
“It is possible that the respondents are not representative of the entire target population [42, 43].”
DURAN, S., Berk, Ş., & Köklü, O. (2022) · Eğitim Bilimleri Dergisi · doi:10.15285/maruaebd.1181564 · Cited by 3
Body image dissatisfaction: A novel predictor of poor quality of life in epilepsy
Alessi, N., Coleman, H., & Rayner, G. (2023) · Epilepsy & Behavior · doi:10.1016/j.yebeh.2023.109149 · Cited by 3
“Furthermore, while the sample of participants was derived from both clinical and community settings, voluntary participation does increase the possibility of self-selection biases whereby people with concerns about their body image may have been more likely to participate [43,44].”
BackgroundCorrelates of burnout in predoctoral dental students in the United States
Joseph, A., Finkelman, M., Khoynezhad, S., & Bordin, T. B. (2023) · Journal of Dental Education · doi:10.1002/jdd.13230 · Cited by 3
Choo, A. L., Gurevich, N., Dadzie, N., Reidenbach, K., Laxman, M., & Ngo, K. (2023) · Perspectives of the ASHA Special Interest Groups · doi:10.1044/2023_persp-22-00241 · Cited by 3
Fuhrmann, L., & Schargus, M. (2023) · Graefe s Archive for Clinical and Experimental Ophthalmology · doi:10.1007/s00417-023-06139-5 · Cited by 5
“Due to a relatively low 11.8% response rate, there is a risk of self-selection bias [36], which may have led to underre-porting of those who do not feel strongly about their EMR use and extreme response bias of those who do, as these participants may have sought to maximize their influence on the…”
BackgroundInfluentialBae, S., & Choi, M. (2023) · Frontiers in Psychology · doi:10.3389/fpsyg.2023.1138812 · Cited by 6
“Accordingly, self-selection bias cannot be ruled out, as only those who were willing to provide their information through online platforms participated (Bethlehem, 2010).”
BackgroundScotts, G. L., Scales, M. J., Araújo, G., Booth, H. L., & Marley, S. A. (2023) · Marine Policy · doi:10.1016/j.marpol.2023.105831 · Cited by 3
Schlag, K. E., & Vangelisti, A. L. (2023) · Health Communication · doi:10.1080/10410236.2023.2270248 · Cited by 4
“First, the use of online survey data introduced sampling issues, including risks of sampling bias (Bethlehem, 2010) in that participants gaining access to this study likely did not fully represent the ADRD family caregiver population.”
Tehrany, R., Maki, D., Teixeira, M. J. C., Chumak, T., & Hoerz, C. (2024) · BMC Musculoskeletal Disorders · doi:10.1186/s12891-023-06878-w · Cited by 4
“This refers to the potential for volunteers to have certain pre-determined views ready to convey [60].”
BackgroundExploring the operational logistics of implementing isolation protocols at equestrian facilities
Turcotte, G., O’Sullivan, T. L., Spence, K. L., Winder, C. B., & Greer, A. L. (2025) · Preventive Veterinary Medicine · doi:10.1016/j.prevetmed.2025.106592 · Cited by 3
Metadata
- Authors
- Bethlehem, J.
- Affiliations
- Centraal Bureau voor de Statistiek (NL)
- Corresponding author
- Bethlehem, Jelke
- Venue
- International Statistical Review
- Publisher
- Wiley
- Published
- 2010-08
- Volume
- 78
- Issue
- 2
- Pages
- 161-188
- ISSN
- 0306-7734 (ISSN-L)
- 1751-5823
- OpenAlex
- W2129332419
- Cited by
- 1,315
- References
- 37
- Citations by year
- 2026: 228 · 2025: 173 · 2024: 151 · 2023: 149 · 2022: 122 · 2021: 144 · 2020: 109 · 2019: 47 · 2018: 38 · 2017: 54 · 2016: 20 · 2015: 32 · 2014: 19 · 2013: 14 · 2012: 6
- FWCI
- 29.95
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- International Statistical Review (publishedVersion)
- UvA-DARE (University of Amsterdam) (publishedVersion, other-oa)
- RePEc: Research Papers in Economics (submittedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
- Topics
- Social Sciences › Sociology and Political Science › Survey Methodology and Nonresponse
- Physical Sciences › Mathematics › Statistics and Probability › Survey Sampling and Estimation Techniques
- Physical Sciences › Mathematics › Statistics and Probability › Census and Population Estimation
- Keywords
- online surveys, selection bias, undercoverage, self-selection, internet access, survey design, participant recruitment
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