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Open access

Research article

First published 2023-11

Recruiting a Hard-to-Reach,Hidden and Vulnerable Population: The Methodological and Practical Pitfalls of Researching Vaccine-Hesitant Parents

Ana Patrícia Hilário, Alice Scavarda, Dino Numerato [...]

Qualitative Health Research

Open access

Research article

First published 2015-12

Finding the Hidden Participant

Amy Ellard-Gray, Nicole K. Jeffrey, Melisa Choubak [...]

International Journal of Qualitative Methods

Retricted access

Research article

First published 2023-8

What Do We Mean By a “Hard-to-reach” Population? Legitimacy Versus Precarity as Barriers to Access

Rachel Ellis

Sociological Methods & Research

Retricted access

Research article

First published 2005-02

Community-Academic Research on Hard-to-Reach Populations: Benefits and Challenges

Cecilia Benoit, Mikael Jansson, Alison Millar [...]

Qualitative Health Research

Open access

Research article

First published 2017

Moving on From Representativeness: Testing the Utility of the Global Drug Survey

Monica J Barratt, Jason A Ferris, Renee Zahnow [...]

Substance Use: Research and Treatment

Retricted access

Research article

First published 2015-2

Hidden Populations,Online Purposive Sampling,and External Validity

Monica J. Barratt, Jason A. Ferris, Simon Lenton

Field Methods

Open access

Research article

First published 2025-1

Research With the Reluctant: Challenges and Strategies

E. B. Gross, Susan A. Gelman

Advances in Methods and Practices in Psychological Science

Retricted access

Research article

First published 2003-04

A Discussion of Chain Referral As a Method of Sampling Hard-to-Reach Populations

Janice Penrod, Deborah Bray Preston, Richard E. Cain [...]

Journal of Transcultural Nursing

Open access

Research article

First published 2010-8

Time-Space Sampling and Respondent-Driven Sampling with Hard-to-Reach Populations

Salaam Semaan

Methodological Innovations

Retricted access

Research article

First published 2023-11

Hard-to-reach population groups in administrative sources: main challenges and future work

Donatella Zindato, Maciej Truszczynski

Statistical Journal of the IAOS

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