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Table 1 Descriptive statistics of the items in the measure

From: The protection motivation theory for predict intention of COVID-19 vaccination in Iran: a structural equation modeling approach

Construct and item Mean Standard deviation Skewness Kurtosis
Perceived susceptibility 17.478 1.164 −0.07 − 0.278
S6: I am at risk for COVID-19 3.671 1.047 −0.699 −.064
S7: I believe I am more likely to get COVID-19 3.208 1.102 0.008 −0.777
S8: The coronavirus will likely enter my body 3.295 1.101 −0.125 −0.791
S9: I am less at risk for COVID-19 than other members of my family 3.292 1.164 −0.251 −0.867
S10: If I contact a patient with COVID-19, my chances of getting COVID-19 are very high 4.004 0.870 −0.915 0.943
Perceived severity 22.045 3.841 −1.957 5.088
S1: I believe that COVID-19 is a serious problem 4.449 0.891 −2.144 4.962
S2: I believe that COVID-19 has bad effects on health 4.417 0.775 −1.863 4.982
S3: I believe that COVID-19 is a serious threat to my health 4.346 0.859 −1.568 2.437
S4: I believe that COVID-19 is a significant disease 4.458 0.723 −1.738 4.454
S5: I believe that COVID-19 can cause serious problems and even death 4.475 0.805 −2.002 4.655
Perceived self-efficacy: If a vaccine is produced, if I want, I’m sure I can get the COVID-19 vaccine 3.984 0.941 −0.9 0.783
Perceived response efficacy 8.220 3.751 −0.981 1.937
R1: If a vaccine is produced, vaccination reduces the risk of COVID-19 or its complications 4.064 0.827 −0.852 1.296
R2: If a vaccine is produced, vaccination will help me worry less about getting COVID-19 4.155 0.833 −1.212 2.194
Intention: If a vaccine is produced, I plan to get the COVID-19 vaccine 4.068 0.975 −1.161 1.457