scholarly journals Contact Modes and Participation in App-Based Smartphone Surveys: Evidence From a Large-Scale Experiment

2021 ◽  
pp. 089443932199383
Author(s):  
Mario Lawes ◽  
Clemens Hetschko ◽  
Joseph W. Sakshaug ◽  
Stephan Grießemer
Keyword(s):  
Large Scale ◽  
Sampling Method ◽  
Population Based ◽  
Nonresponse Bias ◽  
Participation Rates ◽  
Job Seekers ◽  
Scale Experiment ◽  
Email Invitation ◽  
Better Than ◽  
Population Based Survey

Smartphone apps are increasingly being used for population-based survey research. Recruiting people to sign up for an app-based survey is, however, less straightforward compared to traditional surveys, which risks inflating nonresponse as well as the potential for nonresponse bias. By means of an experiment with over 44,000 recently registered job seekers, we present causal evidence on the effects of using different contact modes (email, postal letter, or preannouncement letter and email) on participation rates in an app-based panel survey. Further, using detailed administrative register data, we investigate whether contact modes differentially affect nonresponse bias. We also examine whether the mode of making contact has a lasting effect on panel participation rates and participation rates in momentary assessments collected using the experience sampling method (ESM). Overall, the preannouncement letter and email invitation strategy maximizes participation compared to stand-alone letters and emails, which do not differ significantly in terms of participation rates. Stand-alone letters and the preannouncement approach perform better than emails when it comes to panel participation and submitted ESM episodes.

scholarly journals Paper, E-mail, or Both? Effects of Contact Mode on Participation in a Web Survey of Establishments

2018 ◽  
Vol 37 (6) ◽  
pp. 750-765 ◽  
Author(s):  
Joseph W. Sakshaug ◽  
Basha Vicari ◽  
Mick P. Couper
Keyword(s):  
Response Rate ◽  
Population Based ◽  
High Response Rate ◽  
Nonresponse Bias ◽  
Web Survey ◽  
Participation Rates ◽  
Web Surveys ◽  
Contact Mode ◽  
Mail Address ◽  
E Mail

Identifying strategies that maximize participation rates in population-based web surveys is of critical interest to survey researchers. While much of this interest has focused on surveys of persons and households, there is a growing interest in surveys of establishments. However, there is a lack of experimental evidence on strategies for optimizing participation rates in web surveys of establishments. To address this research gap, we conducted a contact mode experiment in which establishments selected to participate in a web survey were randomized to receive the survey invitation with login details and subsequent reminder using a fully crossed sequence of paper and e-mail contacts. We find that a paper invitation followed by a paper reminder achieves the highest response rate and smallest aggregate nonresponse bias across all-possible paper/e-mail contact sequences, but a close runner-up was the e-mail invitation and paper reminder sequence which achieved a similarly high response rate and low aggregate nonresponse bias at about half the per-respondent cost. Following up undeliverable e-mail invitations with supplementary paper contacts yielded further reductions in nonresponse bias and costs. Finally, for establishments without an available e-mail address, we show that enclosing an e-mail address request form with a prenotification letter is not effective from a response rate, nonresponse bias, and cost perspective.

scholarly journals Prevalence of Trachoma in Unity State, South Sudan: Results from a Large-Scale Population-Based Survey and Potential Implications for Further Surveys

2012 ◽  
Vol 6 (4) ◽  
pp. e1585 ◽  
Author(s):  
Tansy Edwards ◽  
Jennifer Smith ◽  
Hugh J. W. Sturrock ◽  
Lucia W. Kur ◽  
Anthony Sabasio ◽  
...  
Keyword(s):  
Large Scale ◽  
South Sudan ◽  
Population Based ◽  
Scale Population ◽  
Population Based Survey

Population-Based Survey Experiments

2011 ◽  
Author(s):  
Diana C. Mutz
Keyword(s):  
External Validity ◽  
Large Scale ◽  
Population Based ◽  
Social Scientists ◽  
Technological Advances ◽  
The Social ◽  
Survey Experiments ◽  
Scale Population ◽  
Invaluable Tool ◽  
Population Based Survey

Population-based survey experiments have become an invaluable tool for social scientists struggling to generalize laboratory-based results, and for survey researchers besieged by uncertainties about causality. Thanks to technological advances in recent years, experiments can now be administered to random samples of the population to which a theory applies. Yet until now, there was no self-contained resource for social scientists seeking a concise and accessible overview of this methodology, its strengths and weaknesses, and the unique challenges it poses for implementation and analysis. Drawing on examples from across the social sciences, this book covers everything you need to know to plan, implement, and analyze the results of population-based survey experiments. But it is more than just a “how to” manual. This book challenges conventional wisdom about internal and external validity, showing why strong causal claims need not come at the expense of external validity, and how it is now possible to execute experiments remotely using large-scale population samples. Designed for social scientists across the disciplines, the book provides the first complete introduction to this methodology and features a wealth of examples and practical advice.

scholarly journals Modest Association of Joint Hypermobility With Disabling and Limiting Musculoskeletal Pain: Results From a Large-Scale General Population-Based Survey

2013 ◽  
Vol 65 (8) ◽  
pp. 1325-1333 ◽  
Author(s):  
Matthew R. Mulvey ◽  
Gary J. Macfarlane ◽  
Marcus Beasley ◽  
Deborah P. M. Symmons ◽  
Karina Lovell ◽  
...  
Keyword(s):  
General Population ◽  
Musculoskeletal Pain ◽  
Large Scale ◽  
Population Based ◽  
Joint Hypermobility ◽  
Population Based Survey

scholarly journals Folkehøjskolen som forbillede for tyskere. Anmeldelse af: Harald Behrend und Norbert Lochner: Geshickte und Gegenwart der Heimvolkshochschulen in Dänemark, Osnabrück 1966

1983 ◽  
Vol 35 (1) ◽  
pp. 87-89
Author(s):  
Roar Skovmand
Keyword(s):  
High School ◽  
High Schools ◽  
Educational System ◽  
Natural Science ◽  
Large Scale ◽  
Boarding School ◽  
Folk High School ◽  
Scale Experiment ◽  
The Town ◽  
Better Than

The Folk High School as a Model for the GermansBy Roar SkovmandGeschichte und Gegenwart der Heimvolkshochschulen in Dänemark. Osnabrück 1966.Norbert Lochner: Gegenwart und Zukunft d.r Heimvolkshochschulen in Deutschland. 1968. Beitr.ge zur Erwachsenenbildung vol. 11 and 13. Both books were first sent to Grundtvig Studies in 1983 and are here reviewed by Professor Roar Skovmand, Ph. D.The aim of both these books is that corresponding German folk high schools ought to be incorporated into the German educational system. But the institute in Münster-Westfalen which sent the books to us dissociated itself in a foreword from the authors’ ideas and plans. Norbert Lochner, however, is still working on them in Luxembourg.The concept Heimvolkshochschule (a boarding high school) may sound cumbersome to a Dane, but this is due to the fact that a Volkshochschule corresponds largely to the Danish high school evening classes and does not denote a boarding school. In 1968 there were only 23 Heimvolkshochschulen in Germany on the Danish high school model, 6 of these in Schleswig-Holstein. Nearly all of them were out in the country and drew their pupils locally. Both the authors’ analyses are meticulous, with well-chosen quotations from the Danish high school debate in the 1950’s and with comprehensive statistics.A number of high school songs are even translated into German. Perhaps, however, Grundtvig’s own ideas for a state-run high school would have suited the German authors better than the form and content which they themselves came to know in 1948 and which they were so impressed by.They believe rather that ‘nationalism’ must be replaced by ‘the European idea’; the historico-poetic element of contemporary studies and natural science and both the ‘happy Christianity’ and agrarian-tarnished liberalism are thrown overboard. The folk high school never succeeded in capturing the town youth in Denmark and managed even less in Germany. Even so they call the Danish folk high school ‘a successful large-scale experiment’. They have not fully understood Grundtvig’s own high school ideas; but they are not alone in that.

Reaction-based Enumeration, Active Learning, and Free Energy Calculations to Rapidly Explore Synthetically Tractable Chemical Space and Optimize Potency of Cyclin Dependent Kinase 2 Inhibitors

2019 ◽  
Author(s):  
Kyle Konze ◽  
Pieter Bos ◽  
Markus Dahlgren ◽  
Karl Leswing ◽  
Ivan Tubert-Brohman ◽  
...  
Keyword(s):  
Free Energy ◽  
Drug Discovery ◽  
Active Learning ◽  
Large Scale ◽  
Chemical Space ◽  
Population Based ◽  
Free Energy Calculations ◽  
Computational Technique ◽  
Cyclin Dependent Kinase ◽  
Energy Calculations

We report a new computational technique, PathFinder, that uses retrosynthetic analysis followed by combinatorial synthesis to generate novel compounds in synthetically accessible chemical space. Coupling PathFinder with active learning and cloud-based free energy calculations allows for large-scale potency predictions of compounds on a timescale that impacts drug discovery. The process is further accelerated by using a combination of population-based statistics and active learning techniques. Using this approach, we rapidly optimized R-groups and core hops for inhibitors of cyclin-dependent kinase 2. We explored greater than 300 thousand ideas and identified 35 ligands with diverse commercially available R-groups and a predicted IC<sub>50</sub> < 100 nM, and four unique cores with a predicted IC<sub>50</sub> < 100 nM. The rapid turnaround time, and scale of chemical exploration, suggests that this is a useful approach to accelerate the discovery of novel chemical matter in drug discovery campaigns.

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