SMS reminders increase on-time vaccination in Aboriginal and Torres Strait Islander infants

Authors

  • Jane L Manderson Central Queensland Public Health Unit, Queensland Health
  • Nicolas R Smoll Central Queensland Public Health Unit, Queensland Health
  • Dianne L Krenske Central Queensland Public Health Unit, Queensland Health
  • Lucinda Nedwich Central Queensland Public Health Unit, Queensland Health; Aboriginal and Torres Strait Islander Health and Well Being, Central Queensland Hospital and Health Service (CQHHS), Rockhampton Q 4700
  • Latoya Harbin Central Queensland Public Health Unit, Queensland Health; Urban Institute of Indigenous Health (Deadly Choices), Berserker Q 4701
  • Margaret G Charles Central Queensland Public Health Unit, Queensland Health
  • Amanda Wyatt Central Queensland Public Health Unit, Queensland Health
  • Connie N Schulz Central Queensland Public Health Unit, Queensland Health
  • Jacina Walker Central Queensland Public Health Unit, Queensland Health
  • Gulam M Khandaker Gulam.Khandaker@health.qld.gov.au

DOI:

https://doi.org/10.33321/cdi.2023.47.13

Keywords:

immunisation, timeliness, short messaging service, reminders, Indigenous health, Aboriginal and Torres Strait Islander health, child health

Abstract

Timely immunisation is important to protect children from communicable diseases. However, immunisation uptake in Aboriginal and Torres Strait Islander children under the age of two years is often lower than in non-Indigenous children. This contributes to the gap in health outcomes between Aboriginal and Torres Strait Islander children and non-Indigenous children. We have tested the effectiveness of short message service (SMS) reminders in improving timeliness of childhood immunisation in Aboriginal and Torres Strait Islander infants in regional Queensland, Australia. Reminders were sent to parents of Aboriginal and Torres Strait Islander children, at five immunisation age milestones: six weeks, four months, six months, 12 months, and 18 months. There was a significant improvement in the proportion of children vaccinated on-time (within 30 days of the due date), compared to an earlier age cohort, at all milestones except 12 months. The absolute risk difference (ARD) of on-time vaccination between the two cohorts ranged between 4.7% (95% confidence interval [95% CI]: 1.1–8.2%, at six weeks) and 12.9% (95% CI: 7.4–18.5%, at six months). The likelihood of on-time vaccination (rate ratio, RR) in the intervention group compared to the control group ranged from 1.05 (95% CI: 1.01–1.10, at six weeks) to 1.31 (95% CI: 1.14–1.50, at 18 months). SMS reminders were associated with an improvement in immunisation timeliness in Aboriginal and Torres Strait Islander infants at all age milestones measured except 12 months.

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Published

23/03/23

How to Cite

Manderson, Jane L, Nicolas R Smoll, Dianne L Krenske, Lucinda Nedwich, Latoya Harbin, Margaret G Charles, Amanda Wyatt, Connie N Schulz, Jacina Walker, and Gulam M Khandaker. 2023. “SMS Reminders Increase on-Time Vaccination in Aboriginal and Torres Strait Islander Infants”. Communicable Diseases Intelligence 47 (March). https://doi.org/10.33321/cdi.2023.47.13.

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