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4. Recruitment and retention of participants for an international type 1 diabetes prevention trial: a coordinators' perspective.

Author

De Beaufort, Carine [collaborator], Franciscus, Margaret, Nucci, Anita, Bradley, Brenda, Suomalainen, Heli, Greenberg, Ellen, Laforte, Diane, Kleemola, Paivi, Hyytinen, Mila, Salonen, Marja, Martin, Mary Jean, Catte, Daniel, Catteau, Jacki, De Beaufort, Carine [collaborator], Franciscus, Margaret, Nucci, Anita, Bradley, Brenda, Suomalainen, Heli, Greenberg, Ellen, Laforte, Diane, Kleemola, Paivi, Hyytinen, Mila, Salonen, Marja, Martin, Mary Jean, Catte, Daniel, and Catteau, Jacki

Abstract

BACKGROUND: The Trial to Reduce Insulin Dependent Diabetes Mellitus in the Genetically at Risk (TRIGR) is the first multicenter international type 1 diabetes (T1D) prevention trial to be undertaken. A unique feature of TRIGR has been recruitment of eligible pregnant women and enrollment of newborns for long-term follow-up assessments. PURPOSE: Our purpose is to summarize the recruitment and retention strategies used to conduct TRIGR from the perspective of the study coordinators. METHODS: TRIGR was designed to test whether weaning to formula containing hydrolyzed versus intact cow's milk protein would be efficacious in decreasing risk for development of T1D-associated autoantibodies and T1D among infants identified to be at increased risk for T1D based on their human leukocyte antigen (HLA) profile and family history. Multiple strategies tailored to local issues were required to enroll and follow the target number of infants. RESULTS: This study was conducted in the United States, Canada, Australia, and 12 countries in Europe. Of the 5606 mothers registered worldwide, 5000 of their infants were randomized. Of these, 2159 were HLA eligible and enrolled in the 8-month intervention and 10-year follow-up phases of this study. The TRIGR study met the accrual goal after 4.7 years of recruitment, 2.7 years longer than projected initially. Challenges included difficulty in finding fathers with T1D, a higher than expected rate of premature delivery among T1D mothers, and implementation of new privacy regulations mid-trial. The majority of participants were recruited from primary care antenatal clinics located near the study centers and from a general hospital or pediatric center that was affiliated with a TRIGR Study center. Internet and magazine advertisements were found to be useful for recruitment of families. Alternative follow-up strategies are offered to families who wish to reduce or discontinue participation. LIMITATIONS: Our experience is limited to a single interna

Published
2014
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5. Recruitment and retention of participants for an international type 1 diabetes prevention trial:a coordinators' perspective

Author

Franciscus, Margaret, Nucci, Anita, Bradley, Brenda, Suomalainen, Heli, Greenberg, Ellen, Laforte, Diane, Kleemola, Paivi, Hyytinen, Mila, Salonen, Marja, Martin, Mary Jean, Catte, Daniel, Catteau, Jacki, Mandrup-Poulsen, Thomas, Franciscus, Margaret, Nucci, Anita, Bradley, Brenda, Suomalainen, Heli, Greenberg, Ellen, Laforte, Diane, Kleemola, Paivi, Hyytinen, Mila, Salonen, Marja, Martin, Mary Jean, Catte, Daniel, Catteau, Jacki, and Mandrup-Poulsen, Thomas

Abstract

BACKGROUND: The Trial to Reduce Insulin Dependent Diabetes Mellitus in the Genetically at Risk (TRIGR) is the first multicenter international type 1 diabetes (T1D) prevention trial to be undertaken. A unique feature of TRIGR has been recruitment of eligible pregnant women and enrollment of newborns for long-term follow-up assessments.PURPOSE: Our purpose is to summarize the recruitment and retention strategies used to conduct TRIGR from the perspective of the study coordinators.METHODS: TRIGR was designed to test whether weaning to formula containing hydrolyzed versus intact cow's milk protein would be efficacious in decreasing risk for development of T1D-associated autoantibodies and T1D among infants identified to be at increased risk for T1D based on their human leukocyte antigen (HLA) profile and family history. Multiple strategies tailored to local issues were required to enroll and follow the target number of infants.RESULTS: This study was conducted in the United States, Canada, Australia, and 12 countries in Europe. Of the 5606 mothers registered worldwide, 5000 of their infants were randomized. Of these, 2159 were HLA eligible and enrolled in the 8-month intervention and 10-year follow-up phases of this study. The TRIGR study met the accrual goal after 4.7 years of recruitment, 2.7 years longer than projected initially. Challenges included difficulty in finding fathers with T1D, a higher than expected rate of premature delivery among T1D mothers, and implementation of new privacy regulations mid-trial. The majority of participants were recruited from primary care antenatal clinics located near the study centers and from a general hospital or pediatric center that was affiliated with a TRIGR Study center. Internet and magazine advertisements were found to be useful for recruitment of families. Alternative follow-up strategies are offered to families who wish to reduce or discontinue participation.LIMITATIONS: Our experience is

Published
2014

6. Use of vitamin D supplements during infancy in an international feeding trial

Author

Lehtonen, Eveliina, primary, Ormisson, Anne, additional, Nucci, Anita, additional, Cuthbertson, David, additional, Sorkio, Susa, additional, Hyytinen, Mila, additional, Alahuhta, Kirsi, additional, Berseth, Carol, additional, Salonen, Marja, additional, Taback, Shayne, additional, Franciscus, Margaret, additional, González-Frutos, Teba, additional, E Korhonen, Tuuli, additional, L Lawson, Margaret, additional, J Becker, Dorothy, additional, P Krischer, Jeffrey, additional, Knip, Mikael, additional, M Virtanen, Suvi, additional, Mandrup-Poulsen, Thomas, additional, Arjas, Elias, additional, Lernmark, Åke, additional, Schmidt, Barbara, additional, Krischer, Jeffrey P., additional, Åkerblom, Hans K., additional, Koski, Katriina, additional, Koski, Matti, additional, Pajakkala, Eeva, additional, Shanker, Linda, additional, Bradley, Brenda, additional, Dosch, Hans-Michael, additional, Dupré, John, additional, Fraser, William, additional, Lawson, Margaret, additional, Mahon, Jeffrey L., additional, Sermer, Mathew, additional, Taback, Shayne P., additional, Becker, Dorothy, additional, Palmer, Jerry, additional, Pekkala, Minna, additional, Virtanen, Suvi M., additional, Catteau, Jacki, additional, Howard, Neville, additional, Crock, Patricia, additional, Craig, Maria, additional, Clarson, Cheril L., additional, Bere, Lynda, additional, Thompson, David, additional, Metzger, Daniel, additional, Marshall, Colleen, additional, Kwan, Jennifer, additional, Stephure, David K., additional, Pacaud, Daniele, additional, Schwarz, Wendy, additional, Girgis, Rose, additional, Thompson, Marilyn, additional, Catte, Daniel, additional, Lawson, Margaret L., additional, Daneman, Denis, additional, Martin, Mary-Jean, additional, Morin, Valérie, additional, Frenette, Lyne, additional, Ferland, Suzanne, additional, Sanderson, Susan, additional, Heath, Kathy, additional, Huot, Céline, additional, Gonthier, Monique, additional, Thibeault, Maryse, additional, Legault, Laurent, additional, Laforte, Diane, additional, Cummings, Elizabeth A., additional, Scott, Karen, additional, Bridger, Tracey, additional, Crummell, Cheryl, additional, Houlden, Robyn, additional, Breen, Adriana, additional, Carson, George, additional, Kelly, Sheila, additional, Sankaran, Koravangattu, additional, Penner, Marie, additional, White, Richard A., additional, King, Nancy, additional, Popkin, James, additional, Robson, Laurie, additional, Al Taji, Eva, additional, Aldhoon, Irena, additional, Mendlova, Pavla, additional, Vavrinec, Jan, additional, Vosahlo, Jan, additional, Brazdova, Ludmila, additional, Venhacova, Jitrenka, additional, Venhacova, Petra, additional, Cipra, Adam, additional, Tomsikova, Zdenka, additional, Krckova, Petra, additional, Gogelova, Pavla, additional, Einberg, Ülle, additional, Riikjärv, Mall-Anne, additional, Tillmann, Vallo, additional, Kleemola, Päivi, additional, Parkkola, Anna, additional, Suomalainen, Heli, additional, Järvenpää, Anna-Liisa, additional, Hämälainen, Anu-Maaria, additional, Haavisto, Hannu, additional, Tenhola, Sirpa, additional, Lautala, Pentti, additional, Salonen, Pia, additional, Aspholm, Susanna, additional, Siljander, Heli, additional, Holm, Carita, additional, Ylitalo, Samuli, additional, Lounamaa, Raisa, additional, Nuuja, Anja, additional, Talvitie, Timo, additional, Lindström, Kaija, additional, Huopio, Hanna, additional, Pesola, Jouni, additional, Veijola, Riitta, additional, Tapanainen, Päivi, additional, Alar, Abram, additional, Korpela, Paavo, additional, Käär, Marja-Liisa, additional, Mustila, Taina, additional, Virransalo, Ritva, additional, Nykänen, Päivi, additional, Aschemeier, Bärbel, additional, Danne, Thomas, additional, Kordonouri, Olga, additional, Krikovszky, Dóra, additional, Madácsy, László, additional, Khazrai, Yeganeh Manon, additional, Maddaloni, Ernesto, additional, Pozzilli, Paolo, additional, Mannu, Carla, additional, Songini, Marco, additional, de Beaufort, Carine, additional, Schierloh, Ulrike, additional, Bruining, Jan, additional, Bisschoff, Margriet, additional, Basiak, Aleksander, additional, Wasikowa, Renata, additional, Ciechanowska, Marta, additional, Deja, Grazyna, additional, Jarosz-Chobot, Przemyslawa, additional, Szadkowska, Agnieszka, additional, Cypryk, Katarzyna, additional, Zawodniak-Szalapska, Malgorzata, additional, Castano, Luis, additional, Gonzalez Frutos, Teba, additional, Oyarzabal, Mirentxu, additional, Serrano-Ríos, Manuel, additional, Martínez-Larrad, María Teresa, additional, Hawkins, Federico Gustavo, additional, Rodriguez Arnau, Dolores, additional, Ludvigsson, Johnny, additional, Smolinska Konefal, Malgorzata, additional, Hanas, Ragnar, additional, Lindblad, Bengt, additional, Nilsson, Nils-Osten, additional, Fors, Hans, additional, Nordwall, Maria, additional, Lindh, Agne, additional, Edenwall, Hans, additional, Aman, Jan, additional, Johansson, Calle, additional, Gadient, Margrit, additional, Schoenle, Eugen, additional, Daftary, Ashi, additional, Gilmour, Carol, additional, Taculad, Rachel, additional, Tanner-Blasiar, Marilyn, additional, White, Neil, additional, Devaskar, Uday, additional, Horowitz, Heather, additional, Rogers, Lisa, additional, Colon, Roxana, additional, Frazer, Teresa, additional, Torres, Jose, additional, Goland, Robin, additional, Greenberg, Ellen, additional, Nelson, Maudene, additional, Schachner, Holly, additional, Softness, Barney, additional, Ilonen, Jorma, additional, Trucco, Massimo, additional, Nichol, Lynn, additional, Savilahti, Erkki, additional, Härkönen, Taina, additional, Vaarala, Outi, additional, and Luopajärvi, Kristiina, additional

Published
2013
Full Text
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10. Use of vitamin D supplements during infancy in an international feeding trial

Author

Lehtonen, Eveliina, Ormisson, Anne, Nucci, Anita, Cuthbertson, David, Sorkio, Susa, Hyytinen, Mila, Alahuhta, Kirsi, Berseth, Carol, Salonen, Marja, Taback, Shayne, Franciscus, Margaret, Gonzalez-Frutos, Teba, Korhonen, Tuuli E., Lawson, Margaret L., Becker, Dorothy J., Krischer, Jeffrey P., Knip, Mikael, Virtanen, Suvi M., Trigr, Investigators, Mandrup-Poulsen, Thomas, Arjas, Elias, Lernmark, Ake, Schmidt, Barbara, Akerblom, Hans K., Koski, Katriina, Koski, Matti, Pajakkala, Eeva, Shanker, Linda, Bradley, Brenda, Dosch, Hans-Michael, Dupre, John, Fraser, William, Lawson, Margaret, Mahon, Jeffrey L., Sermer, Mathew, Taback, Shayne P., Becker, Dorothy, Palmer, Jerry, Pekkala, Minna, Catteau, Jacki, Howard, Neville, Crock, Patricia, Craig, Maria, Clarson, Cheril L., Bere, Lynda, Thompson, David, Metzger, Daniel, Marshall, Colleen, Kwan, Jennifer, Stephure, David K., Pacaud, Daniele, Schwarz, Wendy, Girgis, Rose, Thompson, Marilyn, Catte, Daniel, Daneman, Denis, Martin, Mary-Jean, Morin, Valerie, Frenette, Lyne, Ferland, Suzanne, Sanderson, Susan, Heath, Kathy, Huot, Celine, Gonthier, Monique, Thibeault, Maryse, Legault, Laurent, Laforte, Diane, Cummings, Elizabeth A., Scott, Karen, Bridger, Tracey, Crummell, Cheryl, Houlden, Robyn, Breen, Adriana, Carson, George, Kelly, Sheila, Sankaran, Koravangattu, Penner, Marie, White, Richard A., King, Nancy, Popkin, James, Robson, Laurie, Al Taji, Eva, Aldhoon, Irena, Mendlova, Pavla, Vavrinec, Jan, Vosahlo, Jan, Brazdova, Ludmila, Venhacova, Jitrenka, Venhacova, Petra, Cipra, Adam, Tomsikova, Zdenka, Krckova, Petra, Gogelova, Pavla, Einberg, Ulle, Riikjarv, Mall-Anne, Vallo Tillmann, Kleemola, Paivi, Parkkola, Anna, Suomalainen, Heli, Jarvenpaa, Anna-Liisa, Hamalainen, Anu-Maaria, Haavisto, Hannu, Tenhola, Sirpa, Lautala, Pentti, Salonen, Pia, Aspholm, Susanna, Siljander, Heli, Holm, Carita, Ylitalo, Samuli, Lounamaa, Raisa, Nuuja, Anja, Talvitie, Timo, Lindstrom, Kaija, Huopio, Hanna, Pesola, Jouni, Veijola, Riitta, Tapanainen, Paivi, Alar, Abram, Korpela, Paavo, Kaar, Marja-Liisa, Mustila, Taina, Virransalo, Ritva, Nykanen, Paivi, Aschemeier, Barbel, Danne, Thomas, Kordonouri, Olga, Krikovszky, Dora, Madacsy, Laszlo, Khazrai, Yeganeh Manon, Maddaloni, Ernesto, Pozzilli, Paolo, Mannu, Carla, Songini, Marco, Beaufort, Carine, Schierloh, Ulrike, Bruining, Jan, Bisschoff, Margriet, Basiak, Aleksander, Wasikowa, Renata, Ciechanowska, Marta, Deja, Grazyna, Jarosz-Chobot, Przemyslawa, Szadkowska, Agnieszka, Cypryk, Katarzyna, Zawodniak-Szalapska, Malgorzata, Castano, Luis, Frutos, Teba Gonzalez, Oyarzabal, Mirentxu, Serrano-Rios, Manuel, Martinez-Larrad, Maria Teresa, Hawkins, Federico Gustavo, Arnau, Dolores Rodriguez, Ludvigsson, Johnny, Konefal, Malgorzata Smolinska, Hanas, Ragnar, Lindblad, Bengt, Nilsson, Nils-Osten, Fors, Hans, Nordwall, Maria, Lindh, Agne, Edenwall, Hans, Aman, Jan, Johansson, Calle, Gadient, Margrit, Schoenle, Eugen, Daftary, Ashi, Gilmour, Carol, Taculad, Rachel, Tanner-Blasiar, Marilyn, White, Neil, Devaskar, Uday, Horowitz, Heather, Rogers, Lisa, Colon, Roxana, Frazer, Teresa, Torres, Jose, Goland, Robin, Greenberg, Ellen, Nelson, Maudene, Schachner, Holly, Softness, Barney, Ilonen, Jorma, Trucco, Massimo, Nichol, Lynn, Savilahti, Erkki, Harkonen, Taina, Vaarala, Outi, and Luopajarvi, Kristiina

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