Table 3 Probit regression estimates of determinants of willingness to participate in COVID-19 vaccine trial

Sex (Ref: male)

 Female

−0.04 (0.05)

−0.05 (0.05)

Age (Ref: 18–23)

 24–29

0.22 (0.15)

−0.01 (0.14)

 30–35

0.16 (0.15)

−0.05 (0.15)

 36–41

0.28^* (0.16)

0.04 (0.16)

 42–47

0.07 (0.19)

−0.19 (0.19)

 48+ 

−0.11 (0.20)

−0.38^* (0.20)

Marital status (Ref: divorced/widowed)

 Living together

−0.24 (0.23)

−0.30 (0.23)

 Married

0.06 (0.19)

0.06 (0.20)

 Never married

−0.002 (0.20)

0.01 (0.20)

 Separated

−0.13 (0.28)

−0.17 (0.28)

Region (Ref: Ashanti)

 Ahafo

0.03 (0.26)

−0.00 (0.26)

 Brong Ahafo

0.11 (0.15)

0.18 (0.15)

 Bono East

0.08 (0.15)

0.09 (0.15)

 Central

−0.03 (0.11)

0.01 (0.11)

 Eastern

−0.01 (0.11)

0.02 (0.11)

 Greater Accra

0.02 (0.10)

−0.01 (0.10)

 Northern/North East

0.05 (0.12)

0.01 (0.12)

 Savannah

−0.18 (0.17)

0.06 (0.21)

 Upper East

0.18 (0.12)

0.13 (0.13)

 Upper West

−0.00 (0.15)

0.03 (0.15)

 Volta/Oti

−0.02 (0.10)

0.03 (0.10)

 Western/Western North

0.08 (0.11)

0.06 (0.11)

Religion (Christian)

 Moslem/traditionalist/other

0.21^** (0.09)

0.19^** (0.09)

Education (Ref: certificate)

 Diploma

0.00 (0.06)

0.02 (0.06)

 Bachelors

−0.08 (0.06)

−0.04 (0.06)

 Masters/PhD/fellowship

0.06 (0.12)

0.06 (0.12)

Professional category (Ref: student)

 Allied health

0.15 (0.10)

0.03 (0.10)

 Medical officer

0.11 (0.15)

0.04 (0.15)

 Midwife

−0.02 (0.10)

−0.09 (0.10)

 Nurse

0.10 (0.09)

−0.02 (0.09)

 Pharmacist

−0.09 (0.17)

0.01 (0.19)

 Physician assistant

0.04 (0.18)

0.05 (0.18)

Workplace (Ref: public)

 Private

0.03 (0.08)

−0.03 (0.08)

 Mission

0.18^*** (0.07)

0.15^** (0.07)

 Quasi/Other

Experience (1 year or less)

 2–5 years

0.05 (0.06)

0.05 (0.06)

 6–9 years

0.06 (0.07)

0.04 (0.07)

 10 years or more

0.12 (0.08)

0.12 (0.09)

COVID-19 treatment centre (Ref: no)

 Yes

−0.06 (0.05)

−0.07 (0.05)

 Observations

569

563