German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results
Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for ex...
Ausführliche Beschreibung
Autor*in: |
Dugas, M. [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2003 |
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Anmerkung: |
© Springer-Verlag 2003 |
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Übergeordnetes Werk: |
Enthalten in: Annals of hematology - Berlin : Springer, 1955, 82(2003), 2 vom: Feb., Seite 83-87 |
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Übergeordnetes Werk: |
volume:82 ; year:2003 ; number:2 ; month:02 ; pages:83-87 |
Links: |
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DOI / URN: |
10.1007/s00277-002-0585-x |
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Katalog-ID: |
SPR003725235 |
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520 | |a Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. | ||
700 | 1 | |a Messerer, D. |4 aut | |
700 | 1 | |a Hasford, J. |4 aut | |
700 | 1 | |a Haferlach, T. |4 aut | |
700 | 1 | |a Heinze, B. |4 aut | |
700 | 1 | |a Ludwig, W. |4 aut | |
700 | 1 | |a Rieder, H. |4 aut | |
700 | 1 | |a Schoch, R. |4 aut | |
700 | 1 | |a Schwartz, S. |4 aut | |
700 | 1 | |a Thiel, E. |4 aut | |
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2003 |
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10.1007/s00277-002-0585-x doi (DE-627)SPR003725235 (SPR)s00277-002-0585-x-e DE-627 ger DE-627 rakwb eng Dugas, M. verfasserin aut German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2003 Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. Messerer, D. aut Hasford, J. aut Haferlach, T. aut Heinze, B. aut Ludwig, W. aut Rieder, H. aut Schoch, R. aut Schwartz, S. aut Thiel, E. aut Enthalten in Annals of hematology Berlin : Springer, 1955 82(2003), 2 vom: Feb., Seite 83-87 (DE-627)253389852 (DE-600)1458429-3 1432-0584 nnns volume:82 year:2003 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/s00277-002-0585-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2003 2 02 83-87 |
spelling |
10.1007/s00277-002-0585-x doi (DE-627)SPR003725235 (SPR)s00277-002-0585-x-e DE-627 ger DE-627 rakwb eng Dugas, M. verfasserin aut German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2003 Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. Messerer, D. aut Hasford, J. aut Haferlach, T. aut Heinze, B. aut Ludwig, W. aut Rieder, H. aut Schoch, R. aut Schwartz, S. aut Thiel, E. aut Enthalten in Annals of hematology Berlin : Springer, 1955 82(2003), 2 vom: Feb., Seite 83-87 (DE-627)253389852 (DE-600)1458429-3 1432-0584 nnns volume:82 year:2003 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/s00277-002-0585-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2003 2 02 83-87 |
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10.1007/s00277-002-0585-x doi (DE-627)SPR003725235 (SPR)s00277-002-0585-x-e DE-627 ger DE-627 rakwb eng Dugas, M. verfasserin aut German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2003 Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. Messerer, D. aut Hasford, J. aut Haferlach, T. aut Heinze, B. aut Ludwig, W. aut Rieder, H. aut Schoch, R. aut Schwartz, S. aut Thiel, E. aut Enthalten in Annals of hematology Berlin : Springer, 1955 82(2003), 2 vom: Feb., Seite 83-87 (DE-627)253389852 (DE-600)1458429-3 1432-0584 nnns volume:82 year:2003 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/s00277-002-0585-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2003 2 02 83-87 |
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10.1007/s00277-002-0585-x doi (DE-627)SPR003725235 (SPR)s00277-002-0585-x-e DE-627 ger DE-627 rakwb eng Dugas, M. verfasserin aut German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results 2003 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2003 Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. Messerer, D. aut Hasford, J. aut Haferlach, T. aut Heinze, B. aut Ludwig, W. aut Rieder, H. aut Schoch, R. aut Schwartz, S. aut Thiel, E. aut Enthalten in Annals of hematology Berlin : Springer, 1955 82(2003), 2 vom: Feb., Seite 83-87 (DE-627)253389852 (DE-600)1458429-3 1432-0584 nnns volume:82 year:2003 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/s00277-002-0585-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2003 2 02 83-87 |
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Dugas, M. |
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Dugas, M. German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results |
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German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results |
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German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results |
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German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results |
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Dugas, M. Messerer, D. Hasford, J. Haferlach, T. Heinze, B. Ludwig, W. Rieder, H. Schoch, R. Schwartz, S. Thiel, E. |
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german multicenter study group for adult all (gmall): recruitment in comparison to all incidence and its impact on study results |
title_auth |
German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results |
abstract |
Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. © Springer-Verlag 2003 |
abstractGer |
Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. © Springer-Verlag 2003 |
abstract_unstemmed |
Abstract. Due to eligibility criteria not all patients with the disease under investigation can be recruited for therapeutic studies. Thus, the external validity of study results cannot per se be taken for granted. The representativity of the admitted patients is the most relevant determinant for external validity and has to be assessed. As an example we examined the representativity of the patients recruited for the German multicenter study group for adult acute lymphoblastic leukemia (ALL) (GMALL). Lacking nationwide ALL incidence figures available in Germany, a methodology was developed to estimate incidence figures, too. All relevant study groups, hospitals, and diagnostic labs were asked to provide data about patients with ALL newly diagnosed between 1997 and 1998. A matching procedure was developed, as heterogeneous databases had to be pooled and checked for duplicates. Age- and sex-specific incidences of ALL were estimated and compared with the number of patients recruited for the GMALL in the same time period. The purpose was to develop a methodology for estimating incidence figures and evaluating the representativity of patients of the GMALL. The combination of various data sources allowed estimation of reliable incidence data for ALL in Germany. Comparisons with the incidence figures for ALL in other countries and crosschecks within Germany confirm our results. Sixty-two percent of all ALL patients in Germany were admitted to the GMALL study. The recruitment rate of more than 60% of the annual incidence of ALL to the GMALL suggests a high external validity as well as an impact of the study on the patterns of treatment and referral of ALL in adults in Germany. There is no selection bias of patients admitted to the GMALL compared to those patients not included in the study. © Springer-Verlag 2003 |
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title_short |
German Multicenter Study Group for Adult ALL (GMALL): recruitment in comparison to ALL incidence and its impact on study results |
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https://dx.doi.org/10.1007/s00277-002-0585-x |
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Messerer, D. Hasford, J. Haferlach, T. Heinze, B. Ludwig, W. Rieder, H. Schoch, R. Schwartz, S. Thiel, E. |
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Messerer, D. Hasford, J. Haferlach, T. Heinze, B. Ludwig, W. Rieder, H. Schoch, R. Schwartz, S. Thiel, E. |
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up_date |
2024-07-03T21:15:49.444Z |
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|
score |
7.4011383 |