Observational Study
Copyright ©The Author(s) 2025.
World J Psychiatry. Apr 19, 2025; 15(4): 104625
Published online Apr 19, 2025. doi: 10.5498/wjp.v15.i4.104625
Table 3 Demographic and infection-related characteristics and poor coronavirus disease 2019 knowledge of the seven clusters, n (%)

Cluster 1 (n = 839)
Cluster 2 (n = 1209)
Cluster 3 (n = 1007)
Cluster 4 (n = 940)
Cluster 5 (n = 1469)
Cluster 6 (n = 1587)
Cluster 7 (n = 1422)
χ2/F
P value
Females370 (44.1)687 (56.8)689 (68.4)531 (56.5)944 (64.3)1004 (63.3)983 (69.1)190.479< 0.001
Age, years34.48 ± 12.9136.27 ± 10.9033.14 ± 9.0032.83 ± 11.3635.64 ± 10.9836.50 ± 9.4534.81 ± 9.5721.651< 0.001
Educational attainment of senior middle school and below287 (34.2)237 (19.6)118 (11.7)248 (26.4)187 (12.7)196 (12.4)157 (11.0)341.395< 0.001
Currently married451 (53.8)769 (63.6)489 (48.6)475 (50.5)792 (53.9)1015 (64.0)821 (57.7)107.53< 0.001
Family members or close relatives infected with COVID-1911 (1.3)7 (0.6)15 (1.5)11 (1.2)18 (1.2)22 (1.4)18 (1.3)5.2460.513
Colleagues, friends, or classmates infected with COVID-1950 (6.0)110 (9.1)81 (8.0)79 (8.4)156 (10.6)176 (11.1)146 (10.3)24.159< 0.001
Worry of COVID-19 infection570 (67.9)901 (74.5)776 (77.1)724 (77.0)1134 (77.2)1265 (79.7)1155 (81.2)64.045< 0.001
Worry of family members’ COVID-19 infection711 (84.7)1044 (86.4)910 (90.4)831 (88.4)1307 (89.0)1443 (90.9)1282 (90.2)33.785< 0.001
Poor COVID-19 knowledge106 (12.6)88 (7.3)52 (5.2)98 (10.4)57 (3.9)39 (2.5)52 (3.7)168.25< 0.001