Table 3. Pneumonia score on chest radiograph according to the age and vaccination status of COVID-19 patients.

Age groups	Non-vaccinated	Incomplete primary vaccine series	Complete primary vaccine series	P value
12–19 yr (n = 72)	0.2 ± 0.9	0 ± 0	0.1 ± 0.6	0.678
20–29 yr (n = 175)	2.4 ± 5.2	0 ± 0	0.1 ± 0.6	< 0.001
30–39 yr (n = 127)	2.6 ± 4.3	0.4 ± 1.3	0.3 ± 1.3	< 0.001
40–49 yr (n = 205)	3.6 ± 1.9	0.9 ± 1.9	0.4 ± 1.5	< 0.001

Data are presented as mean ± standard deviation.

COVID-19 = coronavirus disease 2019.