Heart failure & cardiomyopathies

Widening ethnic inequities in heart failure incidence in New Zealand

HeartPublished Retrospective cohort study

Authors' conclusion

Ethnic inequities in incident HF hospitalisation have widened in NZ over the past 13 years.

Study context

Population
Adults ≥20 years with incident heart failure (HF) hospitalisation, New Zealand, 2006–2018
Participants
116,113 incident HF hospitalisations
Exposure
Māori, Pacific people and Asians vs European/others
Outcome
Incident HF hospitalisation rate by ethnicity
Follow-up
2006–2018
Methodological detailsnational hospitalisation records, age standardised, joinpoint regression
  • National hospitalisation records
  • Age standardised
  • Joinpoint regression

Main finding

As reported in the abstract

Incident HF hospitalisation, IRR vs European/others · 2018
Each group vs European/othersIncidence rate ratio (95% CI)
Māoriaged 20-49 years
6.0(4.9–7.3)
Pacific peopleaged 20-49 years
7.5(6.0–9.4)
Asiansaged 20-49 years
0.5(0.3–0.8)
Māoriaged 50-69 years
3.7(3.4–4.0)
Pacific peopleaged 50-69 years
3.6(3.2–4.1)
Asiansaged 50-69 years
0.5(0.4–0.6)
Māoriaged ≥70 years
1.5(1.4–1.6)
Pacific peopleaged ≥70 years
1.5(1.3–1.7)
Asiansaged ≥70 years
0.5(0.5–0.6)

Observational data: associations, not effects.

Further findings

Ethnic distribution of incident HF hospitalisations

Annual percentage change (APC)

OutcomeMāoriPacific peopleAsiansEuropean/others
Trend in incident HF hospitalisation, aged ≥70 years · 2006–2018Not reported in the abstractNot reported in the abstract−3.3% (95% CI −4.4%–-2.1%)−2.0% (95% CI −2.5%–-1.6%)Māori, Pacific people: not reported in the abstract
Ethnic distribution of incident HF hospitalisations — Aged <70 years: Māori and Pacific
64%
Ethnic distribution of incident HF hospitalisations — Aged <70 years: Asian
37%
Ethnic distribution of incident HF hospitalisations — Aged <70 years: European/others
19%

Trend in incident HF hospitalisation, aged ≥70 years · 2006–2018

Rates unchanged for Māori and Pacific people

Trend in incident HF hospitalisation, aged <70 years · 2006–2018

Rates increased or unchanged regardless of ethnicity

Original publication

Widening ethnic inequities in heart failure incidence in New Zealand. Heart. Published 3 August 2023. doi:10.1136/heartjnl-2023-322795

Summarised from the published abstract; every number is checked against it

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