The impact of the method of consent on response rates in the ISAAC time trends study

Philippa Ellwood; M. I. Asher; A. W. Stewart; N. Aït-Khaled; H. R. Anderson; R. Beasley; B. Björkstén; B. Brunekreef; J. Crane; C. Flohr; S. Foliaki; F. Forastiere; L. García-Marcos; U. Keil; C. K.W. Lai; J. Mallol; E. A. Mitchell; S. Montefort; J. Odhiambo; N. Pearce; C. F. Robertson; D. Strachan; E. von Mutius; S. K. Weiland; G. Weinmayr; H. Williams; G. Wong; T. O. Clayton; B. Benhabylès; F. O. Esamai; L. Ng'ang'a; Z. Bouayad; B. O. Onadeko; H. J. Zar; M. Jerray; Y. Z. Chen; N. S. Zhong; Y. L. Lau; C. B. Kartasasmita; H. Odajima; K. H. Teh; J. de Bruyne; B. S. Quah; F. Cua-Lim; D. Y.T. Goh; H. B. Lee; J. L. Huang; P. Vichyanond; M. Trakultivakom; M. R. Masjedi; J. A. al-Momen; N. Mahmood; O. Al-Rawas; V. A. Khatav; L. Kumar; G. Setty; K. C. Jain; T. U. Sukumaran; M. K. Joshi; A. V. Pherwani; S. K. Sharma; N. M. Hanumante; I. M.E. Guimaraes; C. E. Baena-Cagnani; N. Rosário; G. B. Fischer; M. de Britto; L. de Freitas Souza; D. Solé; L. Amarales; P. Aguilar; M. A. Calvo; M. E. Soto-Quirós; I. Romieu; G. Cukier; J. A. Guggiari-Chase; P. Chiarella; D. Holgado; M. E. Howitt; M. Sears; D. Rennie; K. Yeatts; G. J. Redding; A. Priftanji; M. A. Riikjärv; J. Pekkanen; M. Gotua; V. Svabe; J. Kudzyte; G. Lis; A. Breborowicz; D. Deleanu; E. G. Kondiourina; H. Vogt; V. Ognev; G. Marks; C. Moyes; P. Pattemore; R. Mackay; G. Haidinger; J. Weyler; P. Standring; R. Goulding; A. Steriu; E. Bonci; C. Galassi; M. G. Petronio; E. Chellini; L. Bisanti; P. Sestini; G. Ciccone; S. Piffer; R. Camâra; J. E. Rosado Pinto; C. Nunes; J. M.Lopes dos Santos; L. Clancy; R. M. Busquets; C. González Díaz; A. Arnedo-Pena; G. Garcia Hernández; F. Guillén-Grima; M. M. Morales-Suarez-Varela; A. Blanco Quirós; North Thames; J. B. Austin; M. H. Shamssain; D. Strachan; M. Burr; J. Shah; K. Baratawidjaja; S. Nishima; M. Baeza-Bacab; P. Manning; R. M. Khaitov; B. Lee; L. Nilsson

The impact of the method of consent on response rates in the ISAAC time trends study

Philippa Ellwood
, M. I. Asher
, A. W. Stewart
, N. Aït-Khaled
, H. R. Anderson
, R. Beasley
, B. Björkstén
, B. Brunekreef
, J. Crane
, C. Flohr
, S. Foliaki
, F. Forastiere
, L. García-Marcos
, U. Keil
, C. K.W. Lai
, J. Mallol
, E. A. Mitchell
, S. Montefort
, J. Odhiambo
, N. Pearce

C. F. Robertson, D. Strachan, E. von Mutius, S. K. Weiland, G. Weinmayr, H. Williams, G. Wong, T. O. Clayton, B. Benhabylès, F. O. Esamai, L. Ng'ang'a, Z. Bouayad, B. O. Onadeko, H. J. Zar, M. Jerray, Y. Z. Chen, N. S. Zhong, Y. L. Lau, C. B. Kartasasmita, H. Odajima, K. H. Teh, J. de Bruyne, B. S. Quah, F. Cua-Lim, D. Y.T. Goh, H. B. Lee, J. L. Huang, P. Vichyanond, M. Trakultivakom, M. R. Masjedi, J. A. al-Momen, N. Mahmood, O. Al-Rawas, V. A. Khatav, L. Kumar, G. Setty, K. C. Jain, T. U. Sukumaran, M. K. Joshi, A. V. Pherwani, S. K. Sharma, N. M. Hanumante, I. M.E. Guimaraes, C. E. Baena-Cagnani, N. Rosário, G. B. Fischer, M. de Britto, L. de Freitas Souza, D. Solé, L. Amarales, P. Aguilar, M. A. Calvo, M. E. Soto-Quirós, I. Romieu, G. Cukier, J. A. Guggiari-Chase, P. Chiarella, D. Holgado, M. E. Howitt, M. Sears, D. Rennie, K. Yeatts, G. J. Redding, A. Priftanji, M. A. Riikjärv, J. Pekkanen, M. Gotua, V. Svabe, J. Kudzyte, G. Lis, A. Breborowicz, D. Deleanu, E. G. Kondiourina, H. Vogt, V. Ognev, G. Marks, C. Moyes, P. Pattemore, R. Mackay, G. Haidinger, J. Weyler, P. Standring, R. Goulding, A. Steriu, E. Bonci, C. Galassi, M. G. Petronio, E. Chellini, L. Bisanti, P. Sestini, G. Ciccone, S. Piffer, R. Camâra, J. E. Rosado Pinto, C. Nunes, J. M.Lopes dos Santos, L. Clancy, R. M. Busquets, C. González Díaz, A. Arnedo-Pena, G. Garcia Hernández, F. Guillén-Grima, M. M. Morales-Suarez-Varela, A. Blanco Quirós, North Thames, J. B. Austin, M. H. Shamssain, D. Strachan, M. Burr, J. Shah, K. Baratawidjaja, S. Nishima, M. Baeza-Bacab, P. Manning, R. M. Khaitov, B. Lee, L. Nilsson

Department of Paediatrics
The University of Auckland
School of Population Health
Epidemiology and Biostatistics
International Union Against Tuberculosis and Lung Disease
Division of Community Health Sciences
St. George's University of London
Medical Research Institute of New Zealand
Karolinska Institutet
Utrecht University
University of Otago
Guy’s and St Thomas’ NHS Foundation Trust
Massey University
Department of Epidemiology
Rome E Health Authority
Instituto de Salud Respiratoria
University of Murcia
Institut für Epidemiologie und Sozialmedizin
University of Münster
Department of Medicine and Therapeutics
Chinese University of Hong Kong
Department of Respiratory Medicine
Universidad de Santiago de Chile
Department of Paediatrics: Child and Youth Health
Department of Medicine
University of Malta
Centre Respiratory Diseases Research Unit
Kenya Medical Research Institute
Murdoch Children's Research Institute
Ludwig Maximilian University of Munich
Institute of Epidemiology
Ulm University
Centre for Evidence Based Dermatology
Nottingham University Hospitals NHS Trust
Department of Paediatrics
Prince of Wales Hospital Hong Kong

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

BACKGROUND: Centres in Phases I and III of the International Study of Asthma and Allergies in Childhood (ISAAC) programme used the method of consent (passive or active) required by local ethics committees. METHODS: Retrospectively, relationships between achieved response rates and method of consent for 13-14 and 6-7-year-olds (adolescents and children, respectively), were examined between phases and between English and non-English language centres. RESULTS: Information was obtained for 113 of 115 centres for adolescents and 72/72 centres for children. Both age groups: most centres using passive consent achieved high response rates (>80% adolescents and >70% children). English language centres using active consent showed a larger decrease in response rate. Adolescents: seven centres changed from passive consent in Phase I to active consent in Phase III (median decrease of 13%), with five centres showing lower response rates (as low as 34%). Children: no centre changed consent method between phases. Centres using active consent had lower median response rates (lowest response rate 45%). CONCLUSION: The requirement for active consent for population school-based questionnaire studies can impact negatively on response rates, particularly English language centres, thus adversely affecting the validity of the data. Ethics committees need to consider this issue carefully.

Original language	English
Pages (from-to)	1059-1065
Number of pages	7
Journal	International Journal of Tuberculosis and Lung Disease
Volume	14
Issue number	8
State	Published - Aug 2010

Keywords

Asthma
Children
Consent
Epidemiology
ISAAC

Cite this

Ellwood, P., Asher, M. I., Stewart, A. W., Aït-Khaled, N., Anderson, H. R., Beasley, R., Björkstén, B., Brunekreef, B., Crane, J., Flohr, C., Foliaki, S., Forastiere, F., García-Marcos, L., Keil, U., Lai, C. K. W., Mallol, J., Mitchell, E. A., Montefort, S., Odhiambo, J., ... Nilsson, L. (2010). The impact of the method of consent on response rates in the ISAAC time trends study. International Journal of Tuberculosis and Lung Disease, 14(8), 1059-1065.

@article{1e8dd2b5925641e687e1476dc2c8c727,

title = "The impact of the method of consent on response rates in the ISAAC time trends study",

abstract = "BACKGROUND: Centres in Phases I and III of the International Study of Asthma and Allergies in Childhood (ISAAC) programme used the method of consent (passive or active) required by local ethics committees. METHODS: Retrospectively, relationships between achieved response rates and method of consent for 13-14 and 6-7-year-olds (adolescents and children, respectively), were examined between phases and between English and non-English language centres. RESULTS: Information was obtained for 113 of 115 centres for adolescents and 72/72 centres for children. Both age groups: most centres using passive consent achieved high response rates (>80\% adolescents and >70\% children). English language centres using active consent showed a larger decrease in response rate. Adolescents: seven centres changed from passive consent in Phase I to active consent in Phase III (median decrease of 13\%), with five centres showing lower response rates (as low as 34\%). Children: no centre changed consent method between phases. Centres using active consent had lower median response rates (lowest response rate 45\%). CONCLUSION: The requirement for active consent for population school-based questionnaire studies can impact negatively on response rates, particularly English language centres, thus adversely affecting the validity of the data. Ethics committees need to consider this issue carefully.",

keywords = "Asthma, Children, Consent, Epidemiology, ISAAC",

author = "Philippa Ellwood and Asher, \{M. I.\} and Stewart, \{A. W.\} and N. A{\"i}t-Khaled and Anderson, \{H. R.\} and R. Beasley and B. Bj{\"o}rkst{\'e}n and B. Brunekreef and J. Crane and C. Flohr and S. Foliaki and F. Forastiere and L. Garc{\'i}a-Marcos and U. Keil and Lai, \{C. K.W.\} and J. Mallol and Mitchell, \{E. A.\} and S. Montefort and J. Odhiambo and N. Pearce and Robertson, \{C. F.\} and D. Strachan and \{von Mutius\}, E. and Weiland, \{S. K.\} and G. Weinmayr and H. Williams and G. Wong and Clayton, \{T. O.\} and B. Benhabyl{\`e}s and Esamai, \{F. O.\} and L. Ng'ang'a and Z. Bouayad and Onadeko, \{B. O.\} and Zar, \{H. J.\} and M. Jerray and Chen, \{Y. Z.\} and Zhong, \{N. S.\} and Lau, \{Y. L.\} and Kartasasmita, \{C. B.\} and H. Odajima and Teh, \{K. H.\} and \{de Bruyne\}, J. and Quah, \{B. S.\} and F. Cua-Lim and Goh, \{D. Y.T.\} and Lee, \{H. B.\} and Huang, \{J. L.\} and P. Vichyanond and M. Trakultivakom and Masjedi, \{M. R.\} and al-Momen, \{J. A.\} and N. Mahmood and O. Al-Rawas and Khatav, \{V. A.\} and L. Kumar and G. Setty and Jain, \{K. C.\} and Sukumaran, \{T. U.\} and Joshi, \{M. K.\} and Pherwani, \{A. V.\} and Sharma, \{S. K.\} and Hanumante, \{N. M.\} and Guimaraes, \{I. M.E.\} and Baena-Cagnani, \{C. E.\} and N. Ros{\'a}rio and Fischer, \{G. B.\} and \{de Britto\}, M. and \{de Freitas Souza\}, L. and D. Sol{\'e} and L. Amarales and P. Aguilar and Calvo, \{M. A.\} and Soto-Quir{\'o}s, \{M. E.\} and I. Romieu and G. Cukier and Guggiari-Chase, \{J. A.\} and P. Chiarella and D. Holgado and Howitt, \{M. E.\} and M. Sears and D. Rennie and K. Yeatts and Redding, \{G. J.\} and A. Priftanji and Riikj{\"a}rv, \{M. A.\} and J. Pekkanen and M. Gotua and V. Svabe and J. Kudzyte and G. Lis and A. Breborowicz and D. Deleanu and Kondiourina, \{E. G.\} and H. Vogt and V. Ognev and G. Marks and C. Moyes and P. Pattemore and R. Mackay and G. Haidinger and J. Weyler and P. Standring and R. Goulding and A. Steriu and E. Bonci and C. Galassi and Petronio, \{M. G.\} and E. Chellini and L. Bisanti and P. Sestini and G. Ciccone and S. Piffer and R. Cam{\^a}ra and \{Rosado Pinto\}, \{J. E.\} and C. Nunes and \{dos Santos\}, \{J. M.Lopes\} and L. Clancy and Busquets, \{R. M.\} and \{Gonz{\'a}lez D{\'i}az\}, C. and A. Arnedo-Pena and \{Garcia Hern{\'a}ndez\}, G. and F. Guill{\'e}n-Grima and Morales-Suarez-Varela, \{M. M.\} and \{Blanco Quir{\'o}s\}, A. and North Thames and Austin, \{J. B.\} and Shamssain, \{M. H.\} and D. Strachan and M. Burr and J. Shah and K. Baratawidjaja and S. Nishima and M. Baeza-Bacab and P. Manning and Khaitov, \{R. M.\} and B. Lee and L. Nilsson",

year = "2010",

month = aug,

language = "Ingl{\'e}s",

volume = "14",

pages = "1059--1065",

journal = "International Journal of Tuberculosis and Lung Disease",

issn = "1027-3719",

publisher = "International Union Against Tuberculosis and Lung Disease ",

number = "8",

}

Ellwood, P, Asher, MI, Stewart, AW, Aït-Khaled, N, Anderson, HR, Beasley, R, Björkstén, B, Brunekreef, B, Crane, J, Flohr, C, Foliaki, S, Forastiere, F, García-Marcos, L, Keil, U, Lai, CKW, Mallol, J, Mitchell, EA, Montefort, S, Odhiambo, J, Pearce, N, Robertson, CF, Strachan, D, von Mutius, E, Weiland, SK, Weinmayr, G, Williams, H, Wong, G, Clayton, TO, Benhabylès, B, Esamai, FO, Ng'ang'a, L, Bouayad, Z, Onadeko, BO, Zar, HJ, Jerray, M, Chen, YZ, Zhong, NS, Lau, YL, Kartasasmita, CB, Odajima, H, Teh, KH, de Bruyne, J, Quah, BS, Cua-Lim, F, Goh, DYT, Lee, HB, Huang, JL, Vichyanond, P, Trakultivakom, M, Masjedi, MR, al-Momen, JA, Mahmood, N, Al-Rawas, O, Khatav, VA, Kumar, L, Setty, G, Jain, KC, Sukumaran, TU, Joshi, MK, Pherwani, AV, Sharma, SK, Hanumante, NM, Guimaraes, IME, Baena-Cagnani, CE, Rosário, N, Fischer, GB, de Britto, M, de Freitas Souza, L, Solé, D, Amarales, L, Aguilar, P, Calvo, MA, Soto-Quirós, ME, Romieu, I, Cukier, G, Guggiari-Chase, JA, Chiarella, P, Holgado, D, Howitt, ME, Sears, M, Rennie, D, Yeatts, K, Redding, GJ, Priftanji, A, Riikjärv, MA, Pekkanen, J, Gotua, M, Svabe, V, Kudzyte, J, Lis, G, Breborowicz, A, Deleanu, D, Kondiourina, EG, Vogt, H, Ognev, V, Marks, G, Moyes, C, Pattemore, P, Mackay, R, Haidinger, G, Weyler, J, Standring, P, Goulding, R, Steriu, A, Bonci, E, Galassi, C, Petronio, MG, Chellini, E, Bisanti, L, Sestini, P, Ciccone, G, Piffer, S, Camâra, R, Rosado Pinto, JE, Nunes, C, dos Santos, JML, Clancy, L, Busquets, RM, González Díaz, C, Arnedo-Pena, A, Garcia Hernández, G, Guillén-Grima, F, Morales-Suarez-Varela, MM, Blanco Quirós, A, Thames, N, Austin, JB, Shamssain, MH, Strachan, D, Burr, M, Shah, J, Baratawidjaja, K, Nishima, S, Baeza-Bacab, M, Manning, P, Khaitov, RM, Lee, B & Nilsson, L 2010, 'The impact of the method of consent on response rates in the ISAAC time trends study', International Journal of Tuberculosis and Lung Disease, vol. 14, no. 8, pp. 1059-1065.

TY - JOUR

T1 - The impact of the method of consent on response rates in the ISAAC time trends study

AU - Ellwood, Philippa

AU - Asher, M. I.

AU - Stewart, A. W.

AU - Aït-Khaled, N.

AU - Anderson, H. R.

AU - Beasley, R.

AU - Björkstén, B.

AU - Brunekreef, B.

AU - Crane, J.

AU - Flohr, C.

AU - Foliaki, S.

AU - Forastiere, F.

AU - García-Marcos, L.

AU - Keil, U.

AU - Lai, C. K.W.

AU - Mallol, J.

AU - Mitchell, E. A.

AU - Montefort, S.

AU - Odhiambo, J.

AU - Pearce, N.

AU - Robertson, C. F.

AU - Strachan, D.

AU - von Mutius, E.

AU - Weiland, S. K.

AU - Weinmayr, G.

AU - Williams, H.

AU - Wong, G.

AU - Clayton, T. O.

AU - Benhabylès, B.

AU - Esamai, F. O.

AU - Ng'ang'a, L.

AU - Bouayad, Z.

AU - Onadeko, B. O.

AU - Zar, H. J.

AU - Jerray, M.

AU - Chen, Y. Z.

AU - Zhong, N. S.

AU - Lau, Y. L.

AU - Kartasasmita, C. B.

AU - Odajima, H.

AU - Teh, K. H.

AU - de Bruyne, J.

AU - Quah, B. S.

AU - Cua-Lim, F.

AU - Goh, D. Y.T.

AU - Lee, H. B.

AU - Huang, J. L.

AU - Vichyanond, P.

AU - Trakultivakom, M.

AU - Masjedi, M. R.

AU - al-Momen, J. A.

AU - Mahmood, N.

AU - Al-Rawas, O.

AU - Khatav, V. A.

AU - Kumar, L.

AU - Setty, G.

AU - Jain, K. C.

AU - Sukumaran, T. U.

AU - Joshi, M. K.

AU - Pherwani, A. V.

AU - Sharma, S. K.

AU - Hanumante, N. M.

AU - Guimaraes, I. M.E.

AU - Baena-Cagnani, C. E.

AU - Rosário, N.

AU - Fischer, G. B.

AU - de Britto, M.

AU - de Freitas Souza, L.

AU - Solé, D.

AU - Amarales, L.

AU - Aguilar, P.

AU - Calvo, M. A.

AU - Soto-Quirós, M. E.

AU - Romieu, I.

AU - Cukier, G.

AU - Guggiari-Chase, J. A.

AU - Chiarella, P.

AU - Holgado, D.

AU - Howitt, M. E.

AU - Sears, M.

AU - Rennie, D.

AU - Yeatts, K.

AU - Redding, G. J.

AU - Priftanji, A.

AU - Riikjärv, M. A.

AU - Pekkanen, J.

AU - Gotua, M.

AU - Svabe, V.

AU - Kudzyte, J.

AU - Lis, G.

AU - Breborowicz, A.

AU - Deleanu, D.

AU - Kondiourina, E. G.

AU - Vogt, H.

AU - Ognev, V.

AU - Marks, G.

AU - Moyes, C.

AU - Pattemore, P.

AU - Mackay, R.

AU - Haidinger, G.

AU - Weyler, J.

AU - Standring, P.

AU - Goulding, R.

AU - Steriu, A.

AU - Bonci, E.

AU - Galassi, C.

AU - Petronio, M. G.

AU - Chellini, E.

AU - Bisanti, L.

AU - Sestini, P.

AU - Ciccone, G.

AU - Piffer, S.

AU - Camâra, R.

AU - Rosado Pinto, J. E.

AU - Nunes, C.

AU - dos Santos, J. M.Lopes

AU - Clancy, L.

AU - Busquets, R. M.

AU - González Díaz, C.

AU - Arnedo-Pena, A.

AU - Garcia Hernández, G.

AU - Guillén-Grima, F.

AU - Morales-Suarez-Varela, M. M.

AU - Blanco Quirós, A.

AU - Thames, North

AU - Austin, J. B.

AU - Shamssain, M. H.

AU - Strachan, D.

AU - Burr, M.

AU - Shah, J.

AU - Baratawidjaja, K.

AU - Nishima, S.

AU - Baeza-Bacab, M.

AU - Manning, P.

AU - Khaitov, R. M.

AU - Lee, B.

AU - Nilsson, L.

PY - 2010/8

Y1 - 2010/8

N2 - BACKGROUND: Centres in Phases I and III of the International Study of Asthma and Allergies in Childhood (ISAAC) programme used the method of consent (passive or active) required by local ethics committees. METHODS: Retrospectively, relationships between achieved response rates and method of consent for 13-14 and 6-7-year-olds (adolescents and children, respectively), were examined between phases and between English and non-English language centres. RESULTS: Information was obtained for 113 of 115 centres for adolescents and 72/72 centres for children. Both age groups: most centres using passive consent achieved high response rates (>80% adolescents and >70% children). English language centres using active consent showed a larger decrease in response rate. Adolescents: seven centres changed from passive consent in Phase I to active consent in Phase III (median decrease of 13%), with five centres showing lower response rates (as low as 34%). Children: no centre changed consent method between phases. Centres using active consent had lower median response rates (lowest response rate 45%). CONCLUSION: The requirement for active consent for population school-based questionnaire studies can impact negatively on response rates, particularly English language centres, thus adversely affecting the validity of the data. Ethics committees need to consider this issue carefully.

AB - BACKGROUND: Centres in Phases I and III of the International Study of Asthma and Allergies in Childhood (ISAAC) programme used the method of consent (passive or active) required by local ethics committees. METHODS: Retrospectively, relationships between achieved response rates and method of consent for 13-14 and 6-7-year-olds (adolescents and children, respectively), were examined between phases and between English and non-English language centres. RESULTS: Information was obtained for 113 of 115 centres for adolescents and 72/72 centres for children. Both age groups: most centres using passive consent achieved high response rates (>80% adolescents and >70% children). English language centres using active consent showed a larger decrease in response rate. Adolescents: seven centres changed from passive consent in Phase I to active consent in Phase III (median decrease of 13%), with five centres showing lower response rates (as low as 34%). Children: no centre changed consent method between phases. Centres using active consent had lower median response rates (lowest response rate 45%). CONCLUSION: The requirement for active consent for population school-based questionnaire studies can impact negatively on response rates, particularly English language centres, thus adversely affecting the validity of the data. Ethics committees need to consider this issue carefully.

KW - Asthma

KW - Children

KW - Consent

KW - Epidemiology

KW - ISAAC

UR - https://www.scopus.com/pages/publications/77954710537

M3 - Artículo

C2 - 20626953

AN - SCOPUS:77954710537

SN - 1027-3719

VL - 14

SP - 1059

EP - 1065

JO - International Journal of Tuberculosis and Lung Disease

JF - International Journal of Tuberculosis and Lung Disease

IS - 8

ER -

The impact of the method of consent on response rates in the ISAAC time trends study

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