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Health Promot Perspect
Health Promot Perspect
Health Promot Perspect
TBZMED
Health Promotion Perspectives
2228-6497
Tabriz University of Medical Sciences

10.34172/hpp.43143
Corrigendum
Corrigendum to: Prevalence and incidence of type 1 diabetes in the world: a systematic review and meta-analysis Mobasseri M, Shirmohammadi M, Amiri T, Vahed N, Hosseini Fard H, Ghojazadeh M. Health Promot Perspect. 2020 Mar 30;10(2):98-115. doi: 10.34172/hpp.2020.18
https://orcid.org/0000-0002-8108-5979
Mobasseri Majid 1
Shirmohammadi Masoud 2
Amiri Tarlan 3
Vahed Nafiseh 4 5
Hosseini Fard Hossein 5
https://orcid.org/0000-0002-9946-9452
Ghojazadeh Morteza 5 *
1Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
2Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
3Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
4Emergency Medicine Research Team, Tabriz University of Medical Sciences, Tabriz, Iran
5Research Center for Evidence-Based Medicine, Iranian EBM Centre: A Joanna Briggs Institute Affiliated Group, Tabriz University of Medical Sciences, Tabriz, Iran
* Corresponding Author: Morteza Ghojazadeh, Email: ghojazadehm@hotmail.com
2024
29 7 2024
29 7 2024
14 2 202205
27 4 2024
27 4 2024
©2024 The Author(s).
2024
https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
http://hpp.tbzmed.ac.ir
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pmcCorrigendum

Based on the comments we received from the readers of our article entitled “Prevalence and incidence of type 1 diabetes in the world: a systematic review and meta-analysis”, published in Health Promotion Perspectives, we rechecked the whole of the article and its associated data set, and identified a set of errors and missing attributions that should be corrected as follows:

In the results section, heterogeneity between studies for the prevalence of type 1 diabetes in Asia, Africa, and Europe was incorrectly written as non-significant, while it should have been reported as significant. Also, heterogeneity between the studies in Africa was written as non-significant in the main text, which should have been reported as statistically significant.

In terms of the incidence of type 1 diabetes in America, there is a non-significant heterogeneity, which was incorrectly written as significant in the text. Additionally, in the published paper, there are some incorrect values in Table 3; however, the values used for the meta-analysis are correct. In this table, the correct prevalence values per 100 000 reported from the studies of Mayer-Davis et al,1 Ehehalt et al,2 Erikson et al,3 Evans et al,4 and Lopez Siguero et al5 are 57, 110, 270, 220, and 78, respectively.

Furthermore, Moussa et al6,7 conducted two studies to investigate the prevalence of type 1 and type 2 diabetes among Kuwaiti children, and in our article, instead of the reference of the study on type 1 diabetes,6 the reference of the study considering type 2 diabetes was cited.7 In addition, Peter had two studies, within which the trend of type 1 diabetes,8 and the prevalence and incidence of type 1 diabetes in the Bahamas9 were determined. In our meta-analysis, the first study was mistakenly cited instead of the second study.

In the studies conducted by Dabelea et al,10 Kemper et al,11 Ashner et al,12 and Garancini et al,13the prevalence estimates reported were for overall diabetes, type 1 diabetes, or type 2 diabetes. In our study, however, those estimates were incorrectly extracted as the estimates for overall diabetes or type 2 diabetes. So, the corrections were as follow: for the study of Kemper et al,11 the errors were corrected and the type 1 diabetes data were extracted; the study of Dabelea et al10 was replaced with another publication with more complete information14; for the study of Garancini et al,13 the data on type 1 diabetes were unclear and insufficient to be included in our analysis, and was therefore excluded from the meta-analysis; in the study of Ashner et al,12 the prevalence estimate of type 1 diabetes was not reported, and was thus excluded from our analysis.

Table 3 Characteristics of studies prevalence of type 1 diabetes

Study	Country	Sample Size	Prevalence Per 100000	
Akazawa193	Japan	40	10	
Akesen et al194	Turkey	26	67	
Al-Herbish et al195	Saudi Arabia	42	109.5	
Aschner et al13	America	2827	8000	
Bessaoud et al18	Algeria	10	27	
Dabelea et al45	Navajo nation	40	11	
31	81	
106	278	
Dabelea et al196	USA	57	148	
Ehehalt et al51	Italy	3761	110	
Elamin et al197	Sudan	17	42.98	
El-Ziny et al53	Egypt	10	26.8	
Eriksson et al198	Finland	1009	270	
Evans et al199	Scotland	6592	220	
Frongia et al59	Italy	176	459	
Garancini et al200	Italy	31	80	
Gujral et al201	UK	29	75	
Jorge et al202	Portugal	49	128	
Kemper et al203	USA	70	183	
Mayer-Davis et al100	USA	218	57	
Moussa et al204	Kuwait	103	269.9	
Ostrauskas205	Lithuania	31	80.64	
Ostrauskas and Žalinkevičius206	Lithuania	27	70.23	
Peter et al116	Bahamas	12	31	
Pettitt et al207	USA	74	193	
Ramachandran et al208	India	10	26	
Rangasami et al>127	Scotland	58	150	
Scott et al140	New Zealand	44	115	
López Siguero et al146	Malaga	297	78	
Soliman et al209	Oman	50	13.25	
Songini et al210	Sardinia	46	119	
Wong185	China	30	8.3	
Wu et al211	New Zealand	87	227	

In addition, the estimated prevalence of type 1 diabetes reported by Elamin et al15 in Sudan, was extracted incorrectly. We thus corrected the errors and repeated the meta-analyses, and found that the estimated prevalence of type 1 diabetes was 0.038 (95% CI: 0.017 to 0.084, P < 0.001) in Asia (Figure 1 [the corrected form of Figure 2-B in the original article]), 0.052 (95% CI: 0.015 to 0.168, P < 0.001) in Africa (Figure 2 [the corrected form of Figure 5-B in the original article]), 0.125 (95% CI: 0.086 to 0.177, P < 0.001) in Europe (Figure 3 [the corrected form of Figure 3-B in the original article]), 0.050 (95% CI: 0.036 to 0.070, P < 0.001) in America (Figure 4 [the corrected form of Figure 6-B in the original article]), and 0.075 (95% CI: 0.051 to 0.110, P < 0.001) in the world (Figure 5 [the corrected form of Figure 7 in the original article]). Also, the corrected estimated incidence of type 1 diabetes was 0.020 (95% CI: 0.017 to 0.023, P < 0.001) in America (Figure 6 [the corrected form of Figure 6-A in the original article]). Moreover, in the abstract section of our paper, the estimate for the prevalence of type 1 diabetes should be 0.075% (95% CI: 0.051 to 0.110), instead of 9.5% (95% CI: 0.07 to 0.12). In summary, the overall results for the prevalence of type 1 diabetes in the world had a marginal change, and thus the conclusions drawn in our article are not changed.

Disclosure

As the team of authors, we take full responsibility for the errors and missing attributions, and appreciate the opportunity to prepare this corrigendum.

Figure 1 Prevalence of type 1 diabetes in Asia (the corrected form of Figure 2-B in the original article)

Figure 2 Prevalence of type 1 diabetes in Africa (the corrected form of Figure 3-B in the original article)

Figure 3 Prevalence of type 1 diabetes in Europe (the corrected form of Figure 5 in the original article)

Figure 4 Prevalence of type 1 diabetes in America (the corrected form of Figure 6-B in the original article)

Figure 5 Prevalence of type 1 diabetes in the world (the corrected form of Figure 7 in the original article)

Figure 6 >Incidence of type 1 diabetes in America (the corrected form of Figure 6-A in the original article)
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References

1 Mayer-Davis EJ Beyer J Bell RA Dabelea D D’Agostino R Jr Imperatore G Diabetes in African American youth: prevalence, incidence, and clinical characteristics: the SEARCH for Diabetes in Youth Study Diabetes Care 2009 32 Suppl 2 S112 22 10.2337/dc09-S203 19246576
2 Ehehalt S Popovic P Muntoni S Muntoni S Willasch A Hub R Incidence of diabetes mellitus among children of Italian migrants substantiates the role of genetic factors in the pathogenesis of type 1 diabetes Eur J Pediatr 2009 168 5 613 7 10.1007/s00431-008-0808-9 18777043
3 Eriksson J Forsén B Häggblom M Teppo AM Groop L Clinical and metabolic characteristics of type 1 and type 2 diabetes: an epidemiological study from the Närpes community in western Finland Diabet Med 1992 9 7 654 60 10.1111/j.1464-5491.1992.tb01862.x 1511573
4 Evans JM Newton RW Ruta DA MacDonald TM Morris AD Socio-economic status, obesity and prevalence of type 1 and type 2 diabetes mellitus Diabet Med 2000 17 6 478 80 10975218
5 López Siguero JP, Martínez-Aedo Ollero MJ, Moreno Molina JA, Lora Espinosa A, Martínez Valverde A. [The development of the incidence of diabetes mellitus I in children 0 to 14 years of age in Malaga (1982-1993)]. An Esp Pediatr 1997;47(1):17-22. [Spanish].
6 Moussa MA Alsaeid M Abdella N Refai TM Al-Sheikh N Gomez JE Prevalence of type 1 diabetes among 6- to 18-year-old Kuwaiti children Med Princ Pract 2005 14 2 87 91 10.1159/000083917 15785099
7 Moussa MA Alsaeid M Abdella N Refai TM Al-Sheikh N Gomez JE Prevalence of type 2 diabetes mellitus among Kuwaiti children and adolescents Med Princ Pract 2008 17 4 270 5 10.1159/000129604 18523392
8 Peter S Trends in the incidence of type I diabetes mellitus worldwide West Indian Med J 2007 56 3 264 9 10.1590/s0043-31442007000300015 18072410
9 Peter SA Johnson R Taylor C Hanna A Roberts P McNeil P The incidence and prevalence of type-1 diabetes mellitus J Natl Med Assoc 2005 97 2 250 2 15712788
10 Dabelea D DeGroat J Sorrelman C Glass M Percy CA Avery C Diabetes in Navajo youth: prevalence, incidence, and clinical characteristics: the SEARCH for Diabetes in Youth Study Diabetes Care 2009 32 Suppl 2 S141 7 10.2337/dc09-S206 19246579
11 Kemper AR Dombkowski KJ Menon RK Davis MM Trends in diabetes mellitus among privately insured children, 1998-2002 Ambul Pediatr 2006 6 3 178 81 10.1016/j.ambp.2006.01.001 16713937
12 Aschner P Aguilar-Salinas C Aguirre L Franco L Gagliardino JJ de Lapertosa SG Diabetes in South and Central America: an update Diabetes Res Clin Pract 2014 103 2 238 43 10.1016/j.diabres.2013.11.010 24439209
13 Garancini MP Calori G Ruotolo G Manara E Izzo A Ebbli E Prevalence of NIDDM and impaired glucose tolerance in Italy: an OGTT-based population study Diabetologia 1995 38 3 306 13 10.1007/bf00400635 7758877
14 Dabelea D Mayer-Davis EJ Saydah S Imperatore G Linder B Divers J Prevalence of type 1 and type 2 diabetes among children and adolescents from 2001 to 2009 JAMA 2014 311 17 1778 86 10.1001/jama.2014.3201 24794371
15 Elamin A Omer MI Hofvander Y Tuvemo T Prevalence of IDDM in schoolchildren in Khartoum, Sudan Diabetes Care 1989 12 6 430 2 10.2337/diacare.12.6.430 2731462
