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. 2025 Aug 21;15:30813. doi: 10.1038/s41598-025-16759-y

Table 1.

Sample characteristics (N = 241).

N %
Sex
Females 164 68.0
Males 77 32.0
Age
Years; 95% CI: 26.9–30.5; (median; IQR) 28.00 24.00–40.00
Location
Northern Italy 139 57.7
Central Italy 53 22.0
Southern Italy 49 20.3
Profile
RNs attending an MSN 126 52.3
RNs with no ongoing university education 115 47.7
Work settings (n = 61 workers)
Critical care 29 12.0
Medical care 47 19.5
Surgical care 57 23.7
Primary care 56 23.2
Outpatient services 52 21.6
COVID-19 vaccine*
Yes 237 97.1
Number of COVID-19 Vaccine Boosters
No boosters (unvaccinated respondents) 7 2.9
One booster 11 4.6
Two boosters 71 29.5
Three or more boosters 152 63.1
Decision Regret Scale
Score; 95% CI: 1.85–2.17; (median; IQR) 2.0 1.6–3.0
Adult Vaccine Hesitancy Scale
Score of Trust in Vaccine Efficacy and Benefits; 95% CI: 1.59–1.83; (median; IQR) 1.75 1.0–2.0
Score of Concerns about Vaccine Safety; 95% CI: 2.70–2.92; (median; IQR) 2.67 2.0–3.0
Score of Trust in Health Authorities and Compliance; 95% CI: 1.97–2.21; (median; IQR) 2.0 1.3–2.3