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Table 2 Methods used to calculate YLL and YLD in general burden of disease studies

From: Systematic review of general burden of disease studies using disability-adjusted life years

Author, Year (reference no.) General burden of disease methods YLL methodology YLD methodology
  Incidence or prevalence based approach Disease and injury cause groups used Were missing values handled? Discounting Age weighting Sensitivity analysis Risk factor analysis Which life tables used? Reallocation of ill-defined death? (y/n) Disability weights Distribution by severity? Adjustment for comorbidity
GBD approach Incidence GBD list I, II, III Y Y Y Y Y Standard West 25 (males) and 26 (females) Y GBD N N
Begg, 2008[13] Incidence GBD list I, II, III Y Y Y Y Y Standard West 25 (females) and 26 (males) Y GBD, DDW Y Y
Bowie, 1997[22] Incidence Own developed groups n.a. Y Y N N Standard West 25 (females) and 26 (males) N GBD N N
Bradshaw, 2003[14] Incidence Adapted GBD list (removed causes due to little relevance) Y Y Y Y N Standard West 25 (males) and 26 (females) Y GBD1990, GBD2000, Audw, DDW Y N
Bundhamcharoen, 2002[16] Incidence GBD list I, II, III Y Y Y Y N Standard West 26 Y GBD, DDW Y Y
Chapman, 2006[41] Incidence GBD list I, II, III Y Y Y Y N Standard West 26 Y GBD, Zimb N n.a.
Dodhia, 2008[50] Incidence Adapted GBD list (removed causes and added own groups) Y Y N Y N Standard West 26 N GBD N N
Hyder, 2000[40] Incidence Adapted GBD list (removed causes and added own groups) n.a. Y N Y N Standard West 25 (females) and 26 (males) N GBD N N
Innove Solutions, 1998[51] Incidence Adapted GBD list (removed causes and added own groups) N N N N N Standard West 26 Y GBD, DDW N n.a.
Jankovic, 2006[52] Incidence Adapted GBD list (removed causes due to little relevance) Y Y Y Y N Standard West 26 n.a. GBD1990, GBD2000, DDW Y N
Laaser, 2007[38] Incidence and prevalence GBD list I, II, III n.a. Y Y Y N Standard West 25 (females) and 26 (males) Y GBD1996, GBD2000 n.a. N
Lai, 2009[27] Prevalence GBD list I, II, III Y N N N N Standard life tables of Estonia N Estdw Y N
Lopez, 2006[9] Incidence GBD list I, II, III n.a. Y N Y Y Standard West 25 (females) and 26 (males) Y GBD n.a. N
Mathers, 2001[28] Incidence Adapted GBD list (added own groups) Y Y N Y Y Australian standard life tables Y DDW, GBD Y Y
Melse, 2000[21] Prevalence Own developed groups n.a. N N Y N Dutch life tables for 1994 Y DDW Y N
Michaud, 2006[35] Incidence Adapted GBD list (removed causes and added own groups) Y Y Y Y N Standard West level 25 and 26 Y GBD Y N
Murray, 1997[10] Incidence GBD list I, II, III n.a. Y Y Y Y Standard West level 25 and 26 Y GBD n.a. N
Naghavil, 2009[31] Incidence Adapted GBD list (removed causes and added own groups) Y Y Y N N Iran life expectancy Y GBD, DDW n.a. Y
Phua, 2009[39] Incidence Adapted GBD list (removed causes and added own groups) Y Y N N N Standard West 25 (females) and 26 (males) Y GBD, DDW, Audw Y N
Pike, 2002[30] Incidence Adapted GBD list (removed causes and added own groups) n.a. Y N N N Australian standard life tables n.a. GBD, DDW Y Y
SA Department of Health Australia, 2005[12] Incidence Adapted GBD list (added own groups) Y Y Y Y Y Australian standard life tables Y GBD, DDW Y Y
Somerford, 2004[29] Incidence GBD list I, II, III N Y Y Y Y Australian standard life tables Y N, YLL:YLD N N
Stevens, 2008[26] Incidence GBD list I, II, III n.a. Y Y N Y Standard life tables of Mexico Y GBD N N
Tobias, 2001[20] Incidence Own developed groups Y Y Y Y Y Standard West 25 (females) and 26 (males) n.a. DDW, GBD, Audw, EQ5Ddw Y Y
Ünüvar, 2006[15] Incidence GBD list I, II, III Y Y Y Y Y Standard West Y GBD, DDW Y N
Victorian BoD study, 2005[19] Incidence Adapted GBD list (removed causes and added own groups) Y Y N Y Y Standard West 25 (females) and 26 (males) Y DDW, GBD, EQ5D, Audw Y Y
World Health Organization, 2008[8] Incidence GBD list I, II, III Y Y Y Y Y Standard West level 25 and 26 Y GBD N N
World Health Organization, 2009[11] Incidence GBD list I, II, III Y Y Y Y Y Standard West level 25 and 26 Y GBD N N
Yoon, 2007[24] n.a. Adapted GBD list (removed causes and added own groups) Y n.a. n.a. Y N Standard West Y KORdw Y N
Yusoff, 2004[17] Incidence GBD list I, II, III Y Y N N N Standard West 25 (females) and 26 (males) Y GBD, DDW Y N
Zhao, 2004[18] Incidence GBD list I, II, III n.a. n.a. n.a. N N Australian standard life tables Y DDW, GBD n.a. N
Zhou, 2011[36] Prevalence Adapted GBD list (removed causes) n.a. Y n.a. N N Standard West Y N, YLL:YLD n.a. N
  1. Abbreviations disability weights: Disability weights: GBD1990/GBD 1996 = Global Burden of Disease disability weights 1990[1], GBD2000 = Global Burden of Disease disability weights 1990 supplemented with Dutch Disability weighs, DDW= Dutch Disability weights[53], AUdw = Australian NBD disability weights[25], Zimb = disability weights based on preferences of Zimbabwe[41], KORdw= Korean disability weights[24], Estdw = Estonian disability weights[27], EQ5Ddw = EQ5D disability weights[20].