2 Citations (Scopus)

Abstract

Annual influenza vaccination is recommended to people with chronic conditions. This study aimed to estimate the proportion of chronically ill adults vaccinated against influenza in consecutive seasons and to identify associated factors. We used data from the first National Health Examination Survey (INSEF), a cross-sectional study conducted in 2015 on a probabilistic sample of individuals aged 25–74 years. The population was restricted to individuals who self-reported diabetes, a respiratory, cardiovascular, liver or kidney disease. Self-reported vaccination in 4 consecutive seasons was categorized in 3 levels: unvaccinated, occasionally (vaccinated 1–3 seasons) and repeatedly vaccinated (in all 4 seasons). A multinomial logistic regression was applied to estimate odds-ratio (OR) of influenza vaccination according to sociodemographic factors, chronic condition, health care use and status. In the target population, the 2014/15 influenza vaccine coverage was 33.8% (95% CI: 29.8–38.1). The higher coverage was found in individuals reporting renal disease (66.7%) and diabetes (43.8%). The coverage decreased to 32.6%, 26.0% and 20.8% for individuals with respiratory, cardiovascular and liver diseases, respectively. The probability of being repeatedly vaccinated, compared to unvaccinated, was higher in males (OR = 2.14: 95% CI: 1.31–3.52); aged 65 and 74 (OR = 4.39; 95% CI: 1.99–9.69); whom had an appointment with a general practitioner (OR = 2.77; 95% CI: 1.00–7.66) or other physician (OR = 3.95: 95% CI: 2.53–6.16); with no smoking habits (OR = 1.58; 95% I: 1.02–2.46) and reporting diabetes (OR = 2.13; 95% CI: 1.02–4.45). Finally, having a self-reported cardiovascular condition decreased the likelihood of being occasionally (OR = 0.38; 95% CI = 0.22–0.65) vaccinated against influenza. Younger individuals, females and the ones with a self-reported cardiovascular condition were identified as more likely of non-compliance to the vaccine uptake recommendation. Future vaccination strategies should focus on the previous identified population subgroups. Also, the medical recommendation of the influenza vaccine uptake should continue and be reinforced particularly in individuals with a cardiovascular condition.

Original languageEnglish
Pages (from-to)5265-5272
JournalVaccine
Volume36
Issue number35
DOIs
Publication statusPublished - 23 Aug 2018

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influenza
odds ratio
Human Influenza
Vaccination
Odds Ratio
vaccination
diabetes
Influenza Vaccines
liver diseases
vaccines
kidney diseases
respiratory tract diseases
cardiovascular diseases
Liver Diseases
Cardiovascular Diseases
general practitioners
smoking (habit)
Health Services Needs and Demand
Kidney Diseases
Health Surveys

Keywords

  • Associated factors
  • Chronic condition
  • Influenza vaccination
  • INSEF
  • Repeated vaccination

Cite this

@article{54648f795d174c04b65093422c47c8ee,
title = "Factors associated to repeated influenza vaccination in the Portuguese adults with chronic conditions",
abstract = "Annual influenza vaccination is recommended to people with chronic conditions. This study aimed to estimate the proportion of chronically ill adults vaccinated against influenza in consecutive seasons and to identify associated factors. We used data from the first National Health Examination Survey (INSEF), a cross-sectional study conducted in 2015 on a probabilistic sample of individuals aged 25–74 years. The population was restricted to individuals who self-reported diabetes, a respiratory, cardiovascular, liver or kidney disease. Self-reported vaccination in 4 consecutive seasons was categorized in 3 levels: unvaccinated, occasionally (vaccinated 1–3 seasons) and repeatedly vaccinated (in all 4 seasons). A multinomial logistic regression was applied to estimate odds-ratio (OR) of influenza vaccination according to sociodemographic factors, chronic condition, health care use and status. In the target population, the 2014/15 influenza vaccine coverage was 33.8{\%} (95{\%} CI: 29.8–38.1). The higher coverage was found in individuals reporting renal disease (66.7{\%}) and diabetes (43.8{\%}). The coverage decreased to 32.6{\%}, 26.0{\%} and 20.8{\%} for individuals with respiratory, cardiovascular and liver diseases, respectively. The probability of being repeatedly vaccinated, compared to unvaccinated, was higher in males (OR = 2.14: 95{\%} CI: 1.31–3.52); aged 65 and 74 (OR = 4.39; 95{\%} CI: 1.99–9.69); whom had an appointment with a general practitioner (OR = 2.77; 95{\%} CI: 1.00–7.66) or other physician (OR = 3.95: 95{\%} CI: 2.53–6.16); with no smoking habits (OR = 1.58; 95{\%} I: 1.02–2.46) and reporting diabetes (OR = 2.13; 95{\%} CI: 1.02–4.45). Finally, having a self-reported cardiovascular condition decreased the likelihood of being occasionally (OR = 0.38; 95{\%} CI = 0.22–0.65) vaccinated against influenza. Younger individuals, females and the ones with a self-reported cardiovascular condition were identified as more likely of non-compliance to the vaccine uptake recommendation. Future vaccination strategies should focus on the previous identified population subgroups. Also, the medical recommendation of the influenza vaccine uptake should continue and be reinforced particularly in individuals with a cardiovascular condition.",
keywords = "Associated factors, Chronic condition, Influenza vaccination, INSEF, Repeated vaccination",
author = "Ausenda Machado and Irina Kislaya and Santos, {Ana Jo{\~a}o} and V{\^a}nia Gaio and Gil, {Ana Paula} and Marta Barreto and S{\'o}nia Namorado and Liliana Antunes and {Matias Dias}, Carlos and Baltazar Nunes",
note = "info:eu-repo/grantAgreement/FCT/5876/147304/PT# UID/SOC/04647/2013 SFRH/BPD/107722/2015",
year = "2018",
month = "8",
day = "23",
doi = "10.1016/j.vaccine.2018.07.041",
language = "English",
volume = "36",
pages = "5265--5272",
journal = "Vaccine",
issn = "0264-410X",
publisher = "Elsevier Science B.V., Amsterdam.",
number = "35",

}

TY - JOUR

T1 - Factors associated to repeated influenza vaccination in the Portuguese adults with chronic conditions

AU - Machado, Ausenda

AU - Kislaya, Irina

AU - Santos, Ana João

AU - Gaio, Vânia

AU - Gil, Ana Paula

AU - Barreto, Marta

AU - Namorado, Sónia

AU - Antunes, Liliana

AU - Matias Dias, Carlos

AU - Nunes, Baltazar

N1 - info:eu-repo/grantAgreement/FCT/5876/147304/PT# UID/SOC/04647/2013 SFRH/BPD/107722/2015

PY - 2018/8/23

Y1 - 2018/8/23

N2 - Annual influenza vaccination is recommended to people with chronic conditions. This study aimed to estimate the proportion of chronically ill adults vaccinated against influenza in consecutive seasons and to identify associated factors. We used data from the first National Health Examination Survey (INSEF), a cross-sectional study conducted in 2015 on a probabilistic sample of individuals aged 25–74 years. The population was restricted to individuals who self-reported diabetes, a respiratory, cardiovascular, liver or kidney disease. Self-reported vaccination in 4 consecutive seasons was categorized in 3 levels: unvaccinated, occasionally (vaccinated 1–3 seasons) and repeatedly vaccinated (in all 4 seasons). A multinomial logistic regression was applied to estimate odds-ratio (OR) of influenza vaccination according to sociodemographic factors, chronic condition, health care use and status. In the target population, the 2014/15 influenza vaccine coverage was 33.8% (95% CI: 29.8–38.1). The higher coverage was found in individuals reporting renal disease (66.7%) and diabetes (43.8%). The coverage decreased to 32.6%, 26.0% and 20.8% for individuals with respiratory, cardiovascular and liver diseases, respectively. The probability of being repeatedly vaccinated, compared to unvaccinated, was higher in males (OR = 2.14: 95% CI: 1.31–3.52); aged 65 and 74 (OR = 4.39; 95% CI: 1.99–9.69); whom had an appointment with a general practitioner (OR = 2.77; 95% CI: 1.00–7.66) or other physician (OR = 3.95: 95% CI: 2.53–6.16); with no smoking habits (OR = 1.58; 95% I: 1.02–2.46) and reporting diabetes (OR = 2.13; 95% CI: 1.02–4.45). Finally, having a self-reported cardiovascular condition decreased the likelihood of being occasionally (OR = 0.38; 95% CI = 0.22–0.65) vaccinated against influenza. Younger individuals, females and the ones with a self-reported cardiovascular condition were identified as more likely of non-compliance to the vaccine uptake recommendation. Future vaccination strategies should focus on the previous identified population subgroups. Also, the medical recommendation of the influenza vaccine uptake should continue and be reinforced particularly in individuals with a cardiovascular condition.

AB - Annual influenza vaccination is recommended to people with chronic conditions. This study aimed to estimate the proportion of chronically ill adults vaccinated against influenza in consecutive seasons and to identify associated factors. We used data from the first National Health Examination Survey (INSEF), a cross-sectional study conducted in 2015 on a probabilistic sample of individuals aged 25–74 years. The population was restricted to individuals who self-reported diabetes, a respiratory, cardiovascular, liver or kidney disease. Self-reported vaccination in 4 consecutive seasons was categorized in 3 levels: unvaccinated, occasionally (vaccinated 1–3 seasons) and repeatedly vaccinated (in all 4 seasons). A multinomial logistic regression was applied to estimate odds-ratio (OR) of influenza vaccination according to sociodemographic factors, chronic condition, health care use and status. In the target population, the 2014/15 influenza vaccine coverage was 33.8% (95% CI: 29.8–38.1). The higher coverage was found in individuals reporting renal disease (66.7%) and diabetes (43.8%). The coverage decreased to 32.6%, 26.0% and 20.8% for individuals with respiratory, cardiovascular and liver diseases, respectively. The probability of being repeatedly vaccinated, compared to unvaccinated, was higher in males (OR = 2.14: 95% CI: 1.31–3.52); aged 65 and 74 (OR = 4.39; 95% CI: 1.99–9.69); whom had an appointment with a general practitioner (OR = 2.77; 95% CI: 1.00–7.66) or other physician (OR = 3.95: 95% CI: 2.53–6.16); with no smoking habits (OR = 1.58; 95% I: 1.02–2.46) and reporting diabetes (OR = 2.13; 95% CI: 1.02–4.45). Finally, having a self-reported cardiovascular condition decreased the likelihood of being occasionally (OR = 0.38; 95% CI = 0.22–0.65) vaccinated against influenza. Younger individuals, females and the ones with a self-reported cardiovascular condition were identified as more likely of non-compliance to the vaccine uptake recommendation. Future vaccination strategies should focus on the previous identified population subgroups. Also, the medical recommendation of the influenza vaccine uptake should continue and be reinforced particularly in individuals with a cardiovascular condition.

KW - Associated factors

KW - Chronic condition

KW - Influenza vaccination

KW - INSEF

KW - Repeated vaccination

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U2 - 10.1016/j.vaccine.2018.07.041

DO - 10.1016/j.vaccine.2018.07.041

M3 - Article

VL - 36

SP - 5265

EP - 5272

JO - Vaccine

JF - Vaccine

SN - 0264-410X

IS - 35

ER -