How do online and offline sampling compare in a multinational study of drug use and nightlife behaviour?

Journal article

Waldron, Jon, Grabski, Meryem, Freeman, Tom P., Mokrysz, Claire, Hindocha, Chandni, Measham, Fiona, van Beek, Ruben, van der Pol, Peggy, Hauspie, Bert, Dirkx, Nicky, Schrooten, Jochen, Elgán, Tobias H., Feltmann, Kristin, Benedetti, Elisa, Tomba, Gianpaolo Scalia, Fabi, Francesco, Molinaro, Sabrina, Gripenberg, Johanna, van Havere, Tina, ... Curran, H. Valerie. (2020). How do online and offline sampling compare in a multinational study of drug use and nightlife behaviour? International Journal of Drug Policy. 82, p. 102812. https://doi.org/10.1016/j.drugpo.2020.102812
AuthorsWaldron, Jon, Grabski, Meryem, Freeman, Tom P., Mokrysz, Claire, Hindocha, Chandni, Measham, Fiona, van Beek, Ruben, van der Pol, Peggy, Hauspie, Bert, Dirkx, Nicky, Schrooten, Jochen, Elgán, Tobias H., Feltmann, Kristin, Benedetti, Elisa, Tomba, Gianpaolo Scalia, Fabi, Francesco, Molinaro, Sabrina, Gripenberg, Johanna, van Havere, Tina, van Laar, Margriet and Curran, H. Valerie
Abstract

Background
Online sampling is widely used to recruit hard to reach samples such as drug users at nightlife events. We conducted the first study comparing differences in demographics, drug use and nightlife behaviour between an online sample of young adults engaging with the European nightlife scene, and an offline sample recruited at nightclubs and festivals in Europe.

Methods
Online participants who attended at least six nightlife events in the past 12 months were recruited using social media advertising (May-November 2017). Offline participants were recruited at nightclubs and festivals using a random intercept method (May-November 2017). Samples were compared with respect to age, gender, past year use of alcohol, cannabis, cocaine, ecstasy/MDMA and amphetamines, and past year attendance at nightclubs, licensed festivals, illegal festivals, pubs and house-parties.

Results
6153 online and 3529 offline participants were recruited. When adjusting for differences in age and gender, online participants were less likely to have used each drug and to have attended illegal festivals, pubs and house-parties in the past 12 months. The online sample also used each drug and attended each venue, with the exception of nightclubs, less frequently on average than offline participants. Adjusted odds ratios (range 0.37 to 1.39) and regression coefficients (range -0.84 to 0.07) indicate that the majority of observed differences between the samples were of a small effect size.

Conclusions
Estimates of drug use and nightlife engagement are more conservative when using online sampling compared to venue based sampling. Observed differences were generally small in effect, indicating good overall representativeness when using online sampling in the European nightlife scene.

Keywordsrepresentativeness; internet; online sampling; online survey; nightlife; drug use
Year2020
JournalInternational Journal of Drug Policy
Journal citation82, p. 102812
PublisherElsevier B.V.
ISSN0955-3959
Digital Object Identifier (DOI)https://doi.org/10.1016/j.drugpo.2020.102812
Scopus EID2-s2.0-85086385836
Research or scholarlyResearch
Page range1-7
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All rights reserved
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Controlled
Output statusPublished
Publication dates
Online15 Jun 2020
Publication process dates
Deposited26 Jul 2021
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Cannabis Dampens the Effects of Music in Brain Regions Sensitive to Reward and Emotion
Tom P. Freeman, Rebecca A. Pope, Matthew B. Wall, James A. Bisby, Maartje Luijten, Chandni Hindocha, Claire Mokrysz, Will Lawn, Abigail Moss, Michael A. P. Bloomfield, Celia J. A. Morgan, David J. Nutt and H. Valerie Curran. (2018). Cannabis Dampens the Effects of Music in Brain Regions Sensitive to Reward and Emotion. International Journal of Neuropsychopharmacology. 21(1), pp. 21-32. https://doi.org/10.1093/ijnp/pyx082
Cannabidiol reverses attentional bias to cigarette cues in a human experimental model of tobacco withdrawal
Chandni Hindocha, Tom P. Freeman, Meryem Grabsk, Jack B. Stroud, Holly Crudgington, Alan C. Davies, Ravi K. Das, William Lawn, Celia Morgan and H. Valerie Curran. (2018). Cannabidiol reverses attentional bias to cigarette cues in a human experimental model of tobacco withdrawal. Addiction. 113(9), pp. 1696-1705. https://doi.org/10.1111/add.14243
Amisulpride for very late-onset schizophrenia-like psychosis: The ATLAS three-arm RCT
Howard, Robert, Cort, Elizabeth, Bradley, Rosie, Harper, Emma, Kelly, Linda, Bentham, Peter, Ritchie, Craig, Reeves, Suzanne, Fawzi, Waleed, Livingston, Gill, Sommerlad, Andrew, Oomman, Sabu, Nazir, Ejaz, Nilforooshan, Ramin, Barber, Robert, Fox, Chris, Macharouthu, Ajay, Ramachandra, Pranathi, Pattan, Vivek, ... Gray, Richard. (2018). Amisulpride for very late-onset schizophrenia-like psychosis: The ATLAS three-arm RCT. Health Technology Assessment. 22(67), pp. 1 - 60. https://doi.org/10.3310/hta22670
Ketamine treatment for depression : Opportunities for clinical innovation and ethical foresight
Singh, Ilina, Morgan, Celia, Curran, Valerie, Nutt, David, Schlag, Anne and McShane, Rupert. (2017). Ketamine treatment for depression : Opportunities for clinical innovation and ethical foresight. The Lancet Psychiatry. 4(5), pp. 419-426. https://doi.org/10.1016/S2215-0366(17)30102-5
Anatomy of a Joint: Comparing Self-Reported and Actual Dose of Cannabis and Tobacco in a Joint, and How These Are Influenced by Controlled Acute Administration
Chandni Hindocha, Tom P. Freeman and H. Valerie Curran. (2017). Anatomy of a Joint: Comparing Self-Reported and Actual Dose of Cannabis and Tobacco in a Joint, and How These Are Influenced by Controlled Acute Administration. Cannabis and Cannabinoid Research. 2(1), pp. 217-223. https://doi.org/10.1089/can.2017.0024
Acute memory and psychotomimetic effects of cannabis and tobacco both 'joint' and individually: A placebo-controlled trial
Hindocha, Chandni, Freeman, T. P., Xia, J. X., Shaban, Natacha D. C. and Curran, Helen V.. (2017). Acute memory and psychotomimetic effects of cannabis and tobacco both 'joint' and individually: A placebo-controlled trial. Psychological Medicine. 47(15), pp. 2708 - 2719. https://doi.org/10.1017/S0033291717001222
Editorial : Reporting guidelines for psychopharmacology
Steckler, Thomas, Curran, H. Valerie, de Wit, Harriet, Howes, Oliver, Hoyer, Daniel, Lucki, Irwin, Miczek, Klaus A., Morrow, A. Leslie, Price, Lawrence H. and Robbins, Trevor W.. (2016). Editorial : Reporting guidelines for psychopharmacology. Psychopharmacology. 233(7), pp. 1131-1134. https://doi.org/10.1007/s00213-016-4252-7
AKT1 genotype moderates the acute psychotomimetic effects of naturalistically smoked cannabis in young cannabis smokers
Morgan, Celia J. A., Freeman, T. P., Powell, J. and Curran, Helen V.. (2016). AKT1 genotype moderates the acute psychotomimetic effects of naturalistically smoked cannabis in young cannabis smokers. Translational Psychiatry. 6(2), pp. 1 - 6. https://doi.org/10.1038/tp.2015.219
Deconstructing the nature of episodic foresight deficits associated with chronic opiate use
Mercuri, Kimberly, Terrett, Gill, Bailey, Phoebe E., Henry, Julie D., Curran, Helen Valerie and Rendell, Peter G.. (2016). Deconstructing the nature of episodic foresight deficits associated with chronic opiate use. British Journal of Clinical Psychology. 55(4), pp. 401 - 413. https://doi.org/10.1111/bjc.12110
Are adolescents more vulnerable to the harmful effects of cannabis than adults? A placebo-controlled study in human males
Mokrysz, Claire, Freeman, Tom P., Korkki, S., Griffiths, K. and Curran, Helen V.. (2016). Are adolescents more vulnerable to the harmful effects of cannabis than adults? A placebo-controlled study in human males. Translational Psychiatry. 6(11), pp. 1 - 10. https://doi.org/10.1038/tp.2016.225
LSD enhances the emotional response to music
Kaelen, M., Barrett, F. S., Roseman, L., Lorenz, R., Family, N., Bolstridge, M., Curran, Helen V., Feilding, A., Nutt, David J. and Carhart-Harris, R. L.. (2015). LSD enhances the emotional response to music. Psychopharmacology. 232(19), pp. 3607 - 3614. https://doi.org/10.1007/s00213-015-4014-y
Effects of immediate-release opioid on memory functioning: A randomized-controlled study in patients receiving sustained-release opioids
Kamboj, S. K., Conroy, L., Tookman, A., Carroll, E., Jones, L. and Curran, H.. (2014). Effects of immediate-release opioid on memory functioning: A randomized-controlled study in patients receiving sustained-release opioids. European Journal of Pain. 18(10), pp. 1376 - 1384. https://doi.org/10.1002/j.1532-2149.2014.498.x
Effects of ecstasy on cooperative behaviour and perception of trustworthiness: A naturalistic study
Stewart, L. H., Ferguson, B., Morgan, C. J. A., Swaboda, N., Jones, L., Fenton, R., Wall, M. B. and Curran, H.. (2014). Effects of ecstasy on cooperative behaviour and perception of trustworthiness: A naturalistic study. Journal of Psychopharmacology. 28(11), pp. 1001 - 1008. https://doi.org/10.1177/0269881114544775
Prospective memory impairment in long-term opiate users
Terrett, Gillian, McLennan, Skye, Henry, Julie, Biernacki, Kathryn, Mercuri, Kimberly, Curran, Valerie and Rendell, Peter. (2014). Prospective memory impairment in long-term opiate users. Psychopharmacology. 231(13), pp. 2623 - 2632. https://doi.org/10.1007/s00213-014-3432-6
Benzodiazepines: Risks and benefits. A reconsideration
Baldwin, David S., Aitchison, Katherine, Bateson, Alan, Curran, H. Valerie, Davies, Simon, Leonard, Brian, Nutt, David J., Stephens, David N. and Wilson, Sue. (2013). Benzodiazepines: Risks and benefits. A reconsideration. Journal of Psychopharmacology. 27(11), pp. 967 - 971. https://doi.org/10.1177/0269881113503509
Prospective memory and future event simulation in individuals with alcohol dependence
Griffiths, Alison, Hill, Robert, Morgan, Celia, Rendell, Peter Gregory, Karimi, Khashayar, Wanagaratne, Shamil and Curran, Valerie. (2012). Prospective memory and future event simulation in individuals with alcohol dependence. Addiction. 107(10), pp. 1809 - 1816. https://doi.org/10.1111/j.1360-0443.2012.03941.x
Neurocognitive function and schizophrenia-proneness in individuals dependent on ketamine, on high potency cannabis (skunk) or on cocaine
Morgan, Celia, Duffin, S., Hunt, S., Monaghan, L., Mason, O. and Curran, Helen. (2012). Neurocognitive function and schizophrenia-proneness in individuals dependent on ketamine, on high potency cannabis (skunk) or on cocaine. Pharmacopsychiatry. 45(7), pp. 269 - 274. https://doi.org/10.1055/s-0032-1306310