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)

Independent

Resilience

−0.29

−0.45

−0.12

0.0007

Social support

−0.26

−0.42

−0.10

0.001

Workload

0.50

  [35,36,37,38,39,40,41,42,43,44] h vs ≤ 34 h

−0.25

−0.62

0.12

0.19

  [45,46,47,48,49,50,51,52,53,54] h vs ≤ 34 h

0.03

−0.45

0.52

0.89

  [55,56,57,58,59,60,61,62,63,64] 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