Table 4.

Adjusted coefficient, 95% confidence interval and p-values from multivariable linear regression model for posttraumatic stress symptoms measured at 12-month among healthcare workers (12-month survey responders, n = 343; 67 missings)

Variables		Coefficient	95% CI		p
Independent	Resilience	−0.29	−0.45	−0.12	0.0007
	Social support	−0.26	−0.42	−0.10	0.001
	Workload				0.50
	[35–44] h vs ≤ 34 h	−0.25	−0.62	0.12	0.19
	[45–54] h vs ≤ 34 h	0.03	−0.45	0.52	0.89
	[55–64] h vs ≤ 34 h	0.08	−0.74	0.89	0.85
	≥ 65 h vs ≤ 34 h	0.02	−0.78	0.83	0.95
	Perceived organizational support	−0.06	−0.21	0.10	0.48
	Access to simulation based education (yes vs no)	−0.03	−0.36	0.29	0.83
	Access to mental health help (yes vs no)	0.30	−0.34	0.95	0.35
	Access to PPE				0.21
	Sometimes vs Never or rarely	0.37	−1.01	1.75	0.60
	Often vs Never or rarely	−0.43	−1.49	0.62	0.42
	Always vs Never or rarely	−0.57	−1.59	0.46	0.28
	PPE perception of security				0.0008
	Pretty safe vs Totally safe	0.25	−0.14	0.63	0.21
	Rather or totally in danger vs Totally safe	1.21	0.57	1.85	0.0002
Adjustement	Psychiatric antecedent (yes vs no)	0.47	0.14	0.79	0.005

Regression coefficients are presented for an increase of one standard deviation (SD) for continuous variables (resilience; SD = 6.09, social support; SD = 5.93, perceived organizational support; SD = 11.65). 12-month responders had a mean score of 15.28 ± 12.04 on the PCL-5 scale, n = 397. Type of employment and sex were considered in the stepwise but not selected. The final model is therefore the one above

Abbreviations: CI Confidence intervals, PPE Personal protective equipment, PCL-5 Posttraumatic Stress Disorder Checklist for DSM-5