Social conformism and confidence in systems as additional psychological antecedents of vaccination: a survey to explain intention for COVID-19 vaccination among healthcare and welfare sector workers, France, December 2020 to February 2021

Simi Moirangthem (1) , Cyril Olivier (2) , Amandine Gagneux-Brunon (3, 4) , Gérard Péllissier (2) , Dominique Abiteboul (2) , Isabelle Bonmarin (5) , Elisabeth Rouveix (2) , Elisabeth Botelho-Nevers (6, 7) , Judith E. Mueller (1, 8, 9)

1 EHESP - École des Hautes Études en Santé Publique [EHESP]
2 GERES - Groupe d'Étude sur le Risque d'Exposition des Soignants aux agents infectieux - Research Group for the Prevention of Occupational Infections in Healthcare Workers [Paris, France]
3 UJM - Université Jean Monnet - Saint-Étienne
4 CIC-EC 1408 - Centre d'Investigation Clinique - Epidémiologie Clinique [CHU Saint-Etienne]
5 Santé publique France - French National Public Health Agency [Saint-Maurice, France]
6 Hôpital Ambroise Paré [AP-HP]
7 UVSQ Santé - Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil
8 METIS - Département Méthodes quantitatives en santé publique
9 IP - Institut Pasteur [Paris]

Background - The start of the COVID-19 vaccination campaign among French healthcare and welfare sector workers in January 2021 offered an opportunity to study psychological antecedents of vaccination in this group. Aim We explored whether knowledge and attitude items related to social conformism and confidence in systems contributed to explaining intention for COVID-19 vaccination. Methods We developed a knowledge and attitude questionnaire with 30 items related to five established and two hypothetical psychological antecedents of vaccination (KA-7C). The online questionnaire was distributed from 18 December 2020 to 1 February 2021 through chain-referral via professional networks, yielding a convenience sample. We used multivariable logistic regression to explore the associations of individual and grouped KA-7C items with COVID-19 vaccine intention. Results Among 5,234 participants, the vaccine intention model fit (pseudo R-squared values) increased slightly but significantly from 0.62 to 0.65 when adding social conformism and confidence in systems items. Intention to vaccinate was associated with the majority opinion among family and friends (OR: 11.57; 95% confidence interval (CI): 4.51–29.67) and a positive perception of employer’s encouragement to get vaccinated (vs negative; OR: 6.41; 95% CI: 3.36–12.22). The strongest association of a knowledge item was identifying the statement ‘ Some stages of vaccine development (testing) have been skipped because of the epidemic emergency.’ as false (OR: 2.36; 95% CI: 1.73–3.22). Conclusion The results suggest that social conformism and confidence in systems are distinct antecedents of vaccination among healthcare and welfare workers, which should be taken into account in vaccine promotion.

Mots clés: COVID-19 vaccination; Healthcare workers; Vaccine acceptance; Vaccine hesitancy

Domaines: Santé publique et épidémiologie; Vaccinologie; Psychologie

Simi Moirangthem, Cyril Olivier, Amandine Gagneux-Brunon, Gérard Péllissier, Dominique Abiteboul, et al.. Social conformism and confidence in systems as additional psychological antecedents of vaccination: a survey to explain intention for COVID-19 vaccination among healthcare and welfare sector workers, France, December 2020 to February 2021. Eurosurveillance, 2022, 27 (17), pp.2100617. ⟨10.2807/1560-7917.ES.2022.27.17.2100617⟩. ⟨hal-03656567⟩