Psychometric properties of the Coronavirus Anxiety Scale based on Classical Test Theory (CTT) and Item Response Theory (IRT) models among Chinese front-line healthcare workers

Table 2 Frequency distribution of sociodemographic characteristics (n = 811)

Variables	Groups	n	%/\(\overline{\mathbf{X} }\pm S\)
Sex	Male	205	25.28
Sex	Female	606	74.72
Age (years)	19–65	811	31.90 ± 7.82
Occupation	Nurse	536	66.09
Occupation	Doctor	275	33.91
Professional title	Junior	574	70.78
	Intermediate grade	182	22.44
	Senior title	55	6.78
Years of working	1 ~ 40	811	9.47 ± 7.99
Hospital degree	Secondary hospital	495	61.04
Hospital degree	Tertiary hospital	316	38.96

ISSN: 2050-7283