A model for presenting accelerometer paradata in large studies: ISCOLE

Catrine Tudor-Locke, Emily F Mire, Kara N Dentro, Tiago V Barreira, John M Schuna Jr, Pei Zhao, Mark S Tremblay, Martyn Standage, Olga L Sarmiento, Vincent Onywera, Tim Olds, Victor Matsudo, José Maia, Carol Maher, Estelle V Lambert, Anura Kurpad, Rebecca Kuriyan, Gang Hu, Mikael Fogelholm, Jean-Philippe Chaput, Timothy S Church, Peter T Katzmarzyk, ISCOLE Research Group, Peter T Katzmarzyk, Timothy S Church, Denise G Lambert, Tiago Barreira, Stephanie Broyles, Ben Butitta, Catherine Champagne, Shannon Cocreham, Kara Dentro, Katy Drazba, Deirdre Harrington, William Johnson, Dione Milauskas, Emily Mire, Allison Tohme, Ruben Rodarte, Bobby Amoroso, John Luopa, Rebecca Neiberg, Scott Rushing, Timothy Olds, Carol Maher, Lucy Lewis, Katia Ferrar, Effie Georgiadis, Rebecca Stanley, Victor Keihan Rodrigues Matsudo, Sandra Matsudo, Timoteo Araujo, Luis Carlos de Oliveira, Leandro Rezende, Luis Fabiano, Diogo Bezerra, Gerson Ferrari, Mark S Tremblay, Jean-Philippe Chaput, Priscilla Bélanger, Mike Borghese, Charles Boyer, Allana LeBlanc, Claire Francis, Geneviève Leduc, Pei Zhao, Gang Hu, Chengming Diao, Wei Li, Weiqin Li, Enqing Liu, Gongshu Liu, Hongyan Liu, Jian Ma, Yijuan Qiao, Huiguang Tian, Yue Wang, Tao Zhang, Fuxia Zhang, Olga Sarmiento, Julio Acosta, Yalta Alvira, Maria Paula Diaz, Rocio Gamez, Maria Paula Garcia, Luis Guillermo Gómez, Lisseth Gonzalez, Silvia Gonzalez, Carlos Grijalba, Leidys Gutierrez, David Leal, Nicolas Lemus, Etelvina Mahecha, Maria Paula Mahecha, Rosalba Mahecha, Andrea Ramirez, Paola Rios, Andres Suarez, Camilo Triana, Mikael Fogelholm, Elli Hovi, Jemina Kivelä, Sari Räsänen, Sanna Roito, Taru Saloheimo, Leena Valta, Anura Kurpad, Rebecca Kuriyan, Deepa P Lokesh, Michelle Stephanie D'Almeida, Lygia Correa, D Vijay, Vincent Onywera, Mark S Tremblay, Joy Wachira, Stella Muthuri, Jose Maia, Alessandra da Silva Borges, Sofia Oliveira Sá Cachada, Raquel Nichele de Chaves, Natacha Queiroz Ferreira Gomes, Sara Isabel Sampaio Pereira, Daniel Monteiro de Vilhena, Fernanda Karina dos Santos, Pedro Gil Rodrigues da Silva, Michele Caroline de Souza, Vicki Lambert, Matthew April, Monika Uys, Nirmala Naidoo, Nandi Synyanya, Madelaine Carstens, Martyn Standage, Sean Cumming, Clemens Drenowatz, Lydia Emm, Fiona Gillison, Julia Zakrzewski, Catrine Tudor-Locke, Ashley Braud, Sheletta Donatto, Corbin Lemon, Ana Jackson, Ashunti Pearson, Gina Pennington, Daniel Ragus, Ryan Roubion, John Schuna Jr, Derek Wiltz, Alan Batterham, Jacqueline Kerr, Michael Pratt, Angelo Pietrobelli, Catrine Tudor-Locke, Emily F Mire, Kara N Dentro, Tiago V Barreira, John M Schuna Jr, Pei Zhao, Mark S Tremblay, Martyn Standage, Olga L Sarmiento, Vincent Onywera, Tim Olds, Victor Matsudo, José Maia, Carol Maher, Estelle V Lambert, Anura Kurpad, Rebecca Kuriyan, Gang Hu, Mikael Fogelholm, Jean-Philippe Chaput, Timothy S Church, Peter T Katzmarzyk, ISCOLE Research Group, Peter T Katzmarzyk, Timothy S Church, Denise G Lambert, Tiago Barreira, Stephanie Broyles, Ben Butitta, Catherine Champagne, Shannon Cocreham, Kara Dentro, Katy Drazba, Deirdre Harrington, William Johnson, Dione Milauskas, Emily Mire, Allison Tohme, Ruben Rodarte, Bobby Amoroso, John Luopa, Rebecca Neiberg, Scott Rushing, Timothy Olds, Carol Maher, Lucy Lewis, Katia Ferrar, Effie Georgiadis, Rebecca Stanley, Victor Keihan Rodrigues Matsudo, Sandra Matsudo, Timoteo Araujo, Luis Carlos de Oliveira, Leandro Rezende, Luis Fabiano, Diogo Bezerra, Gerson Ferrari, Mark S Tremblay, Jean-Philippe Chaput, Priscilla Bélanger, Mike Borghese, Charles Boyer, Allana LeBlanc, Claire Francis, Geneviève Leduc, Pei Zhao, Gang Hu, Chengming Diao, Wei Li, Weiqin Li, Enqing Liu, Gongshu Liu, Hongyan Liu, Jian Ma, Yijuan Qiao, Huiguang Tian, Yue Wang, Tao Zhang, Fuxia Zhang, Olga Sarmiento, Julio Acosta, Yalta Alvira, Maria Paula Diaz, Rocio Gamez, Maria Paula Garcia, Luis Guillermo Gómez, Lisseth Gonzalez, Silvia Gonzalez, Carlos Grijalba, Leidys Gutierrez, David Leal, Nicolas Lemus, Etelvina Mahecha, Maria Paula Mahecha, Rosalba Mahecha, Andrea Ramirez, Paola Rios, Andres Suarez, Camilo Triana, Mikael Fogelholm, Elli Hovi, Jemina Kivelä, Sari Räsänen, Sanna Roito, Taru Saloheimo, Leena Valta, Anura Kurpad, Rebecca Kuriyan, Deepa P Lokesh, Michelle Stephanie D'Almeida, Lygia Correa, D Vijay, Vincent Onywera, Mark S Tremblay, Joy Wachira, Stella Muthuri, Jose Maia, Alessandra da Silva Borges, Sofia Oliveira Sá Cachada, Raquel Nichele de Chaves, Natacha Queiroz Ferreira Gomes, Sara Isabel Sampaio Pereira, Daniel Monteiro de Vilhena, Fernanda Karina dos Santos, Pedro Gil Rodrigues da Silva, Michele Caroline de Souza, Vicki Lambert, Matthew April, Monika Uys, Nirmala Naidoo, Nandi Synyanya, Madelaine Carstens, Martyn Standage, Sean Cumming, Clemens Drenowatz, Lydia Emm, Fiona Gillison, Julia Zakrzewski, Catrine Tudor-Locke, Ashley Braud, Sheletta Donatto, Corbin Lemon, Ana Jackson, Ashunti Pearson, Gina Pennington, Daniel Ragus, Ryan Roubion, John Schuna Jr, Derek Wiltz, Alan Batterham, Jacqueline Kerr, Michael Pratt, Angelo Pietrobelli

Abstract

Background: We present a model for reporting accelerometer paradata (process-related data produced from survey administration) collected in the International Study of Childhood Obesity Lifestyle and the Environment (ISCOLE), a multi-national investigation of >7000 children (averaging 10.5 years of age) sampled from 12 different developed and developing countries and five continents.

Methods: ISCOLE employed a 24-hr waist worn 7-day protocol using the ActiGraph GT3X+. Checklists, flow charts, and systematic data queries documented accelerometer paradata from enrollment to data collection and treatment. Paradata included counts of consented and eligible participants, accelerometers distributed for initial and additional monitoring (site specific decisions in the face of initial monitoring failure), inadequate data (e.g., lost/malfunction, insufficient wear time), and averages for waking wear time, valid days of data, participants with valid data (≥4 valid days of data, including 1 weekend day), and minutes with implausibly high values (≥20,000 activity counts/min).

Results: Of 7806 consented participants, 7372 were deemed eligible to participate, 7314 accelerometers were distributed for initial monitoring and another 106 for additional monitoring. 414 accelerometer data files were inadequate (primarily due to insufficient wear time). Only 29 accelerometers were lost during the implementation of ISCOLE worldwide. The final locked data file consisted of 6553 participant files (90.0% relative to number of participants who completed monitoring) with valid waking wear time, averaging 6.5 valid days and 888.4 minutes/day (14.8 hours). We documented 4762 minutes with implausibly high activity count values from 695 unique participants (9.4% of eligible participants and <0.01% of all minutes).

Conclusions: Detailed accelerometer paradata is useful for standardizing communication, facilitating study management, improving the representative qualities of surveys, tracking study endpoint attainment, comparing studies, and ultimately anticipating and controlling costs.

Trial registration: ClinicalTrials.gov: NCT01722500.

Figures

Figure 1
Figure 1
Participant flow chart reflecting the separate study stages of participant enrollment, data collection, and data processing cross-tabulated with trackable data derived from accelerometers, participants/data files, and reasons for data loss at each stage.

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Source: PubMed

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