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Mortality in first- and second-generation immigrants to Sweden diagnosed with type 2 diabetes : a 10 year nationwide cohort study

Bennet, Louise LU orcid ; Udumyan, Ruzan ; Östgren, Carl Johan ; Rolandsson, Olov ; Jansson, Stefan P.O. and Wändell, Per (2021) In Diabetologia 64(1). p.95-108
Abstract

Aims/hypothesis: Non-Western immigrants to Europe are at high risk for type 2 diabetes. In this nationwide study including incident cases of type 2 diabetes, the aim was to compare all-cause mortality (ACM) and cause-specific mortality (CSM) rates in first- and second-generation immigrants with native Swedes. Methods: People living in Sweden diagnosed with new-onset pharmacologically treated type 2 diabetes between 2006 and 2012 were identified through the Swedish Prescribed Drug Register. They were followed until 31 December 2016 for ACM and until 31 December 2012 for CSM. Analyses were adjusted for age at diagnosis, sex, socioeconomic status, education, treatment and region. Associations were assessed using Cox regression analysis.... (More)

Aims/hypothesis: Non-Western immigrants to Europe are at high risk for type 2 diabetes. In this nationwide study including incident cases of type 2 diabetes, the aim was to compare all-cause mortality (ACM) and cause-specific mortality (CSM) rates in first- and second-generation immigrants with native Swedes. Methods: People living in Sweden diagnosed with new-onset pharmacologically treated type 2 diabetes between 2006 and 2012 were identified through the Swedish Prescribed Drug Register. They were followed until 31 December 2016 for ACM and until 31 December 2012 for CSM. Analyses were adjusted for age at diagnosis, sex, socioeconomic status, education, treatment and region. Associations were assessed using Cox regression analysis. Results: In total, 138,085 individuals were diagnosed with type 2 diabetes between 2006 and 2012 and fulfilled inclusion criteria. Of these, 102,163 (74.0%) were native Swedes, 28,819 (20.9%) were first-generation immigrants and 7103 (5.1%) were second-generation immigrants with either one or both parents born outside Sweden. First-generation immigrants had lower ACM rate (HR 0.80 [95% CI 0.76, 0.84]) compared with native Swedes. The mortality rates were particularly low in people born in non-Western regions (0.46 [0.42, 0.50]; the Middle East, 0.41 [0.36, 0.47]; Asia, 0.53 [0.43, 0.66]; Africa, 0.47 [0.38, 0.59]; and Latin America, 0.53 [0.42, 0.68]). ACM rates decreased with older age at migration and shorter stay in Sweden. Compared with native Swedes, first-generation immigrants with ≤ 24 years in Sweden (0.55 [0.51, 0.60]) displayed lower ACM rates than those spending >24 years in Sweden (0.92 [0.87, 0.97]). Second-generation immigrants did not have better survival rates than native Swedes but rather displayed higher ACM rates for people with both parents born abroad (1.28 [1.05, 1.56]). Conclusions/interpretation: In people with type 2 diabetes, the lower mortality rate in first-generation non-Western immigrants compared with native Swedes was reduced over time and was equalised in second-generation immigrants. These findings suggest that acculturation to Western culture may impact ACM and CSM in immigrants with type 2 diabetes but further investigation is needed. [Figure not available: see fulltext.].

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
All-cause mortality, Cause-specific mortality, First-generation, Immigrants, Incident, Non-Western, Second-generation, Survival, Type 2 diabetes
in
Diabetologia
volume
64
issue
1
pages
14 pages
publisher
Springer
external identifiers
  • pmid:32979073
  • scopus:85091606516
ISSN
0012-186X
DOI
10.1007/s00125-020-05279-1
project
The MEDIM project
Nationwide research collaboration in family medicine and type 2 diabetes - Swedish Primary Care Diabetes (SPACE)
language
English
LU publication?
yes
id
15fa5cd7-90cd-484a-be72-4a7aaa991c0e
date added to LUP
2020-11-03 14:55:24
date last changed
2024-06-12 22:48:50
@article{15fa5cd7-90cd-484a-be72-4a7aaa991c0e,
  abstract     = {{<p>Aims/hypothesis: Non-Western immigrants to Europe are at high risk for type 2 diabetes. In this nationwide study including incident cases of type 2 diabetes, the aim was to compare all-cause mortality (ACM) and cause-specific mortality (CSM) rates in first- and second-generation immigrants with native Swedes. Methods: People living in Sweden diagnosed with new-onset pharmacologically treated type 2 diabetes between 2006 and 2012 were identified through the Swedish Prescribed Drug Register. They were followed until 31 December 2016 for ACM and until 31 December 2012 for CSM. Analyses were adjusted for age at diagnosis, sex, socioeconomic status, education, treatment and region. Associations were assessed using Cox regression analysis. Results: In total, 138,085 individuals were diagnosed with type 2 diabetes between 2006 and 2012 and fulfilled inclusion criteria. Of these, 102,163 (74.0%) were native Swedes, 28,819 (20.9%) were first-generation immigrants and 7103 (5.1%) were second-generation immigrants with either one or both parents born outside Sweden. First-generation immigrants had lower ACM rate (HR 0.80 [95% CI 0.76, 0.84]) compared with native Swedes. The mortality rates were particularly low in people born in non-Western regions (0.46 [0.42, 0.50]; the Middle East, 0.41 [0.36, 0.47]; Asia, 0.53 [0.43, 0.66]; Africa, 0.47 [0.38, 0.59]; and Latin America, 0.53 [0.42, 0.68]). ACM rates decreased with older age at migration and shorter stay in Sweden. Compared with native Swedes, first-generation immigrants with ≤ 24 years in Sweden (0.55 [0.51, 0.60]) displayed lower ACM rates than those spending &gt;24 years in Sweden (0.92 [0.87, 0.97]). Second-generation immigrants did not have better survival rates than native Swedes but rather displayed higher ACM rates for people with both parents born abroad (1.28 [1.05, 1.56]). Conclusions/interpretation: In people with type 2 diabetes, the lower mortality rate in first-generation non-Western immigrants compared with native Swedes was reduced over time and was equalised in second-generation immigrants. These findings suggest that acculturation to Western culture may impact ACM and CSM in immigrants with type 2 diabetes but further investigation is needed. [Figure not available: see fulltext.].</p>}},
  author       = {{Bennet, Louise and Udumyan, Ruzan and Östgren, Carl Johan and Rolandsson, Olov and Jansson, Stefan P.O. and Wändell, Per}},
  issn         = {{0012-186X}},
  keywords     = {{All-cause mortality; Cause-specific mortality; First-generation; Immigrants; Incident; Non-Western; Second-generation; Survival; Type 2 diabetes}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{95--108}},
  publisher    = {{Springer}},
  series       = {{Diabetologia}},
  title        = {{Mortality in first- and second-generation immigrants to Sweden diagnosed with type 2 diabetes : a 10 year nationwide cohort study}},
  url          = {{http://dx.doi.org/10.1007/s00125-020-05279-1}},
  doi          = {{10.1007/s00125-020-05279-1}},
  volume       = {{64}},
  year         = {{2021}},
}