Table 4.

Average knowledge, perception, and barriers against COVID-19 vaccines with the 95% confidence interval (CI) and significance level (P) of the participants according to various demographical variable (n = 5965).

Variables	No.	Average knowledge score out of 25 (95% CI)	P	Average perception score out of 20 (95% CI)	P value	Average barriers score out of 40 (95% CI)
Age group
18–24	1310	15.64 (15.49–15.79)	0.001	14.79 (14.58–15.00)	<0.001	21.69 (21.42–21.97)	<0.001
25–34	1639	15.49 (15.36–15.62)		14.05 (13.86–14.24)		21.76 (21.51–22.00)
35–44	1337	15.65 (15.52–15.79)		14.27 (14.08–14.47)		22.27 (22.00–22.54)
45–54	1044	15.93 (15.78–16.08)		14.57 (14.37–14.78)		22.38 (22.10–22.67)
55–64	517	15.87 (15.69–16.06)		14.99 (14.70–15.28)		21.67 (21.27–22.06)
65–74	105	15.93 (15.49–16.38)		15.49 (14.93–16.05)		22.26 (21.27–23.25)
≥75	13	15.23 (12.22–18.24)		15.31 (12.80–17.82)		24.38 (19.53–29.23)
Total	5965	15.68 (15.61–15.74)		14.46 (14.37–14.56)		21.97 (21.85–22.10)
Gender
Male	2932	15.78 (15.69–15.88)	0.002	14.71 (14.58–14.84)	<0.001	21.98 (21.79–22.16)	0.962
Female	3033	15.57 (15.48–15.67)		14.22 (14.09–14.36)		21.97 (21.80–22.14)
Nationality
Saudi	5611	15.66 (15.60–15.73)	0.119	14.48 (14.38–14.58)	0.150	21.90 (21.77–22.03)	<0.001
Non Saudi	354	15.88 (15.60–15.17)		14.18 (13.79–14.58)		23.19 (22.63–23.75)
Education level
Primary	18	15.52 (15.37–15.66)	0.007	14.35 (14.14–14.56)	0.091	24.11 (20.92–27.30	0.001
Elementary	82	15.79 (15.25–16.33)		14.43 (14.32–14.55)		22.73 (21.88–23.58)
High school	699	15.96 (15.76–16.16)		14.75 (14.49–15.02)		22.46 (22.11–22.82)
University	3920	15.67 (15.59–15.75)		14.78 (14.11–15.45)		21.97 (21.81–22.12)
Postgraduate	1243	16.28 (14.38–18.18)		15.56 (13.86–17.26)		21.64 (21.35–21.93)
Total	5962	15.68 (15.61–15.74)		14.46 (14.37–14.55)		21.97 (21.85–22.10)
Employment
Employed	3137	15.69 (15.60–15.78)	0.189	14.46 (14.33–14.59)	<0.001	22.11 (21.93–22.28)	0.170
Student	1180	15.67 (15.52–15.83)		14.64 (14.41–14.86)		21.77 (21.47–22.06)
Retiree	646	15.83 (15.64–16.01)		15.08 (14.84–15.33)		21.85 (21.48–22.21)
Unemployed	1002	15.54 (15.38–15.71)		13.87 (13.64–14.10)		21.89 (21.60–22.17)
Total	5965	15.68 (15.61–15.74)		14.46 (14.37–14.56)		21.97 (21.85–22.10)
Average monthly household income (SAR)
<5000	493	15.65 (15.39–15.92)		14.05 (13.71–14.39)	0.004	22.69 (22.24–23.14)	<0.001
5001–10000	1311	15.59 (15.45–15.73)		14.24 (14.03–14.44)		22.57 (22.30–22.84)
10001–20000	1925	15.76 (15.64–15.87)		14.55 (14.38–14.71)		21.94 (21.72–22.16)
20001–40000	1325	15.62 (15.49–15.74)		14.54 (14.34–14.74)		21.51 (21.25–21.78)
40001–60000	375	15.65 (15.37–15.92)		14.78 (14.41–15.14)		21.54 (21.03–22.04)
>60000	536	15.78 (15.56–16.00)		14.69 (14.39–14.99)		21.42 (21.00–21.83)
Total	5965	15.68 (15.61–15.74)	0.423	14.46 (14.37–14.56)		21.97 (21.85–22.10)