Table 5.

Predictors of post-traumatic stress symptoms

	Multivariate linear regression analysis
	β coefficient	CI for exp(β)	P-value
Gender (female)	6.451	4.602–8.299	<0.001*
Education
University degree	−0.379	−2.245 to 1.488	0.691
Postgraduate degree	−3.401	−5.635 to −1.167	0.003*
PhD degree	−5.737	−9.479 to −1.996	0.003*
History of psychiatric treatment (no)	−4.028	−6.274 to −1.782	<0.001*
Perceived severity of COVID-19 infection
Level 2	7.695	−2.955 to 18.344	0.157
Level 3	9.708	−0.685 to 20.102	0.067
Level 4	8.296	−2.197 to 18.788	0.121
Level 5	5.622	−4.930 to 16.174	0.296
Perceived personal situation in case of COVID-19
Level of severity 2	−0.164	−6.127 to 5.799	0.957
Level of severity 3	−2.290	−8.169 to 3.589	0.445
Level of severity 4	−0.527	−6.534 to 5.480	0.863
Level of severity 5	1.008	−5.165 to 7.182	0.749
Possibility of infection without protective measures
Probably no	−4.088	−14.569 to 6.393	0.444
Maybe no maybe yes	−4.880	14.404–4.645	0.315
Probably yes	−5.512	−15.026 to 4.003	0.256
Definitely	−6.692	−16.400 to 3.016	0.177
Possibility of COVID-19 infection
Low	1.754	−3.621 to 7.129	0.522
Neither low nor high	0.966	−4.107 to 6.039	0.709
High	2.634	−2.598 to 7.865	0.324
Very high	0.917	−5.439 to 7.274	0.777
Worry about COVID-19 infection
No worry	2.935	−2.067 to 7.937	0.250
Slight worry	6.837	1.858–11.816	0.007*
Enough worry	11.649	6.617–16.680	<0.001*
Great worry	23.865	18.201–29.530	<0.001*
Perceived efficacy of protective measures
Probably not	12.903	2.059–23.747	0.020*
Maybe no maybe yes	7.752	−1.864 to 17.367	0.114
Probably yes	5.045	−4.377 to 14.427	0.292
Definitely	4.268	−5.093 to 13.630	0.371
Νο adherence to protective measures	−6.540	−13.063 to −0.017	0.049*
Regression statistics	F = 11.645, d.f. = 30, P < 0.001   R2 = 0.206

^*Significance level was set at P < 0.05.