Table 5 Logistic regression model predicting improved protective behaviours after COVID-19 vaccination (n = 469)

Gender (ref. = female)

 Male

2.13 (0.54–8.44)

1.17 (0.63–2.19)

0.89 (0.47–1.68)

1.58 (0.90–2.76)

Marital status (ref. = single)

 Married

0.71 (0.11–4.61)

1.44 (0.63–3.31)

1.00 (0.45–2.25)

1.12 (0.53–2.37)

 Other

 < 0.01 (0.00-inf)

 < 0.01 (0.00-inf)

0.89 (0.20–3.39)

2.81 (0.05–1.44)

Age group (ref. = middle adult, 25–44 years)

 Early adult (18–24 years)

2.43 (0.22–27.48)

1.29 (0.45–3.74)

3.93 (1.26–12.27)*

2.36 (0.84–6.60)

 Late adult (45–59 years)

2.53 (0.37–17.18)

0.59 (0.26–1.38)

1.99 (0.86–4.65)

1.33 (0.61–2.90)

 Elderly (≥ 60 years)

 < 0.01 (0-inf)

4.09 (0.10–1.62)

2.17 (0.58–8.09)

2.9 (0.97–8.67)

Education (ref. = high vocational certificate or higher)

 Vocational certificate or lower

2.71 (0.36–20.64)

1.57 (0.66–3.88)

0.81 (0.29–2.23)

2.10 (0.90,4.91)

Healthcare worker (ref. = healthcare worker)

Non-healthcare worker

2.81 (0.45–17.54)

4.31 (1.72–10.94)*

0.88 (0.41–1.90)

2.45 (1.13–5.33)*

Accommodation (ref. = rural)

 Urban

4.29 (0.32–57.21)

1.42 (0.49–4.12)

0.89 (0.34–2.32

3.60 (1.11–11.64)*

 Suburb

0.72 (0.03–16.37)

1.52 (0.48–4.84)

1.19 (0.41–3.50)

2.63 (0.75–0.92)

Vaccine regimens (ref. = 1 ^st AZD1222 / 2 ^nd AZD1222)

 2 doses

  1^stCoronaVac / 2^ndAZD1222

0.3 (0.01–6.32)

0.67 (0.22–2.13)

3.07 (0.98–9.58)

0.99 (0.49–3.75)

  1^stBBIBP-CorV / 2^ndBBIBP-CorV

 < 0.01 (0.00-inf)

1.19 (0.29–4.67)

1.39 (0.30–6.53)

0.50 (0.09–2.76)

  1^stBNT162b2 / 2^ndBNT162b2

2.69 (0.13–56.65)

1.45 (0.29–7.12)

2.30 (0.46–11.41)

1.30 (0.27–6.22)

  1^stCoronaVac / 2^ndCoronaVac

3.1 (0.22–44.62)

2.71 (0.68,11.73)

2.63 (0.54–12.80)

1.81 (0.41–8.01)

  1^stAZD1222 / 2^ndBNT162b2

 < 0.01 (0.00-inf)

0.9 (0.09–8.43)

0.85 (0.09–8.20)

0.57 (0.06–5.31)

 3 doses

  1^stCoronaVac / 2^ndCoronaVac / 3^rdBNT162b2

1.3 (0.14–11.99)

2.61 (0.88–7.63)

1.42 (0.42–4.78)

1.50 (0.52–4.31)

  1^stCoronaVac / 2^ndCoronaVac / 3^rdAZD1222

0.73 (0.06–9.60)

0.48 (0.10–2.48)

1.85 (0.54–6.40)

0.99 (0.30–3.27)

  1^stAZD1222 / 2^ndAZD1222 / 3^rdBNT162b2

1.08 (0.46–256.53)

2.02 (0.42–10.02)

0.57 (0.06–5.28)

0.21 (0.02–1.91)

  1^stBBIBP-CorV / 2^ndBBIBP-CorV / 3^rdBNT162b2

 < 0.01 (0.00-inf)

0.93 (0.15–5.76)

0.86 (0.09–8.48)

0.29 (0.65–12.69)

Other regimens

 Others

1.09 (0.13–8.96)

0.84 (0.30–2.31)

0.82 (0.27–2.52)

1.67 (0.71–3.95)