Christopher A Bell1, Kimberley A Simmonds2, Shannon E MacDonald3. 1. Alberta Health Surveillance and Assessment, Edmonton, Alberta, Canada; School of Public Health, University of Alberta, Edmonton, Alberta, Canada. Electronic address: chris.bell@gov.ab.ca. 2. Alberta Health Surveillance and Assessment, Edmonton, Alberta, Canada; Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada. 3. Department of Pediatrics, University of Calgary, Calgary, Alberta, Canada; Faculty of Nursing, University of Alberta, Edmonton, Alberta, Canada.
Abstract
INTRODUCTION: Vaccination status is often categorized as complete or not-complete. This ignores the potentially important heterogeneity in children whose vaccinations are not-complete. We sought to subcategorize not-completely vaccinated children and determine whether characteristics differed among these subgroups. METHODS: This retrospective cohort study assessed vaccination status at 2 years of age for 43,965 children in the 2008 Alberta (Canada) birth cohort who were registered with provincial vital statistics records. Children were categorized (based on the five routinely scheduled childhood vaccines) as complete, incomplete, selective, or non-vaccination status. Characteristics derived from administrative health databases were used to determine factors associated with vaccination status. RESULTS: Population-level vaccination status at 2 years of age was found to be: 71.1% complete and 28.9% not complete (21.9% incomplete, 2.0% selective, and 5.1% non-vaccinated). Midwife delivery at home, compared to physician delivery in hospital, was strongly associated with non-vaccination status (adjusted odds ratio [aOR] 51.70, 95% CI 37.10-72.10). Factors that might pose barriers to vaccination, such as single marital status (aOR 1.58, 95% CI 1.49-1.67), large number of household children (≥4 vs. 1) (aOR 3.24, 95% CI 2.95-3.54), and multiple household moves (≥3 vs. 0) (aOR 1.69, 95% CI 1.35-2.10), were all strongly associated with incomplete vaccination status. CONCLUSIONS: Of the children who were not completely vaccinated at age 2, the vast majority had started but not completed the vaccination series, while a smaller number were selectively vaccinated or not vaccinated at all. Distinct differences are present among these groups that require attention when addressing vaccine coverage.
INTRODUCTION: Vaccination status is often categorized as complete or not-complete. This ignores the potentially important heterogeneity in children whose vaccinations are not-complete. We sought to subcategorize not-completely vaccinated children and determine whether characteristics differed among these subgroups. METHODS: This retrospective cohort study assessed vaccination status at 2 years of age for 43,965 children in the 2008 Alberta (Canada) birth cohort who were registered with provincial vital statistics records. Children were categorized (based on the five routinely scheduled childhood vaccines) as complete, incomplete, selective, or non-vaccination status. Characteristics derived from administrative health databases were used to determine factors associated with vaccination status. RESULTS: Population-level vaccination status at 2 years of age was found to be: 71.1% complete and 28.9% not complete (21.9% incomplete, 2.0% selective, and 5.1% non-vaccinated). Midwife delivery at home, compared to physician delivery in hospital, was strongly associated with non-vaccination status (adjusted odds ratio [aOR] 51.70, 95% CI 37.10-72.10). Factors that might pose barriers to vaccination, such as single marital status (aOR 1.58, 95% CI 1.49-1.67), large number of household children (≥4 vs. 1) (aOR 3.24, 95% CI 2.95-3.54), and multiple household moves (≥3 vs. 0) (aOR 1.69, 95% CI 1.35-2.10), were all strongly associated with incomplete vaccination status. CONCLUSIONS: Of the children who were not completely vaccinated at age 2, the vast majority had started but not completed the vaccination series, while a smaller number were selectively vaccinated or not vaccinated at all. Distinct differences are present among these groups that require attention when addressing vaccine coverage.
Authors: Mireille Guay; Aubrey Maquiling; Ruoke Chen; Valérie Lavergne; Donalyne-Joy Baysac; Audrey Racine; Eve Dubé; Shannon E MacDonald; Nicolas L Gilbert Journal: BMC Public Health Date: 2022-09-08 Impact factor: 4.135
Authors: Shannon E MacDonald; Margaret L Russell; Xianfang C Liu; Kimberley A Simmonds; Diane L Lorenzetti; Heather Sharpe; Jill Svenson; Lawrence W Svenson Journal: Hum Vaccin Immunother Date: 2018-12-20 Impact factor: 3.452
Authors: Ellen Rafferty; Xiaoyan Guo; Bruce McDonald; Lawrence W Svenson; Shannon Elizabeth MacDonald Journal: BMJ Open Date: 2019-11-02 Impact factor: 2.692