Table 3 Linear regression results of variables related to concerns and knowledge associated with the psychological impact of the 2020 COVID-19 outbreak measured with DASS-Subscales and the IES-R

 Yes

4077 (98.8)

2.41 ± 3.60

.98

−0.03 ± 2.79

.98

−0.92 ± 3.41

.60

6.85 ± 7.99

.09

 No

14 (0.3)

0.000

6.26 ± 6.71

.06

0.000

5.00 ± 5.20

.06

0.001

4.51 ± 6.36

.16

0.000

15.53 ± 14.89

<.05

 Unsure (Ref.)

35 (0.8)

–

–

–

–

–

–

–

–

 Yes

2767 (67.1)

0.67 ± 0.75

.08

0.57 ± 0.58

.06

0.60 ± 0.71

.10

0.11 ± 1.67

.90

 No

236 (5.7)

0.001

−1.09 ± 1.52

.16

0.002

− 1.05 ± 1.18

.08

0.001

−0.97 ± 1.44

.19

0.000

−3.16 ± 3.37

.07

 Unsure (Ref.)

1123 (27.2)

–

–

–

–

–

–

–

–

 Yes

978 (23.7)

0.27 ± 0.91

.55

0.60 ± 0.70

.10

0.21 ± 0.86

.64

0.70 ± 2.01

.49

 No

1929 (46.8)

0.004

−2.17 ± 0.77

<.001^a

0.006

−1.45 ± 0.60

<.001^a

0.003

−1.80 ± 0.73

<.001^a

0.003

−3.74 ± 1.72

<.001^a

 Unsure (Ref.)

1219 (29.5)

–

–

–

–

–

–

–

–

 Yes

4112 (99.7)

0.001

−6.30 ± 5.68

.030

0.003

−7.89 ± 4.39

<.001

0.002

−7.58 ± 5.38

.006

0.001

−12.76^a ± 12.60 12.60

.047

No (Ref.)

14 (0.3)

–

–

–

–

–

–

–

–

 Yes

4088 (99.1)

0.000

−1.86 ± 3.46

.29

0.000

−1.54 ± 2.68

.26

0.000

−2.36 ± 3.28

.16

0.000

−0.09 ± 7.67

.98

 No (Ref.)

38 (0.9)

–

–

–

–

–

–

–

 Yes

3619 (87.7)

0.003

−1.71 ± 1.01

<.001

0.005

−1.73 ± 0.78

<.001

0.004

−2.04 ± 0.95

<.001

0.004

−4.36 ± 2.23

<.001

 No (Ref.)

507 (12.3)

–

–

–

–

–

–

–

–

 Internet

2324 (56.3)

1.37 ± −2.26

<.001^a

0.30 ± −0.73

.30

1.04 ± −1.86

<.001^a

−0.21 ± 1.65

.80

 Radio

303 (7.3)

0.03 ± −0.01

.97

0.58 ± −0.50

.28

0.12 ± −0.07

.85

0.99 ± 3.01

.52

 Family/Friends

78 (1.9)

0.005

0.91 ± 0.19

.47

0.003

1.23 ± −0.03

.21

0.004

1.28 ± 0.21

.28

0.001

1.41 ± 5.49

.61

 Others (e.g. newspapers)

169 (4.1)

−1.93 ± 0.25

.029

−1.75 ± 0.80

.011^a

−1.40 ± 0.27

.10

−4.15 ± 3.86

.035

 TV (Ref.)

1252 (30.3)

–

–

–

–

–

–

–

–

 Very satisfied

1696 (41.1)

−1.92 ± 2.28

.10

−2.44 ± 1.77

.007^a

−2.56 ± 2.16

.020

−3.84 ± 5.08

.14

 Somewhat satisfied

1974 (47.8)

0.26 ± 2.27

.82

−1.28 ± 1.76

.16

−0.70 ± 2.15

.53

−1.53 ± 5.06

.55

 Not very satisfied

294 (7.1)

0.012

2.00 ± 2.54

.12

0.011

0.18 ± 1.97

.86

0.015

1.19 ± 2.41

.33

0.005

2.07 ± 5.66

.47

 Not satisfied at all

72 (1.7)

4.26 ± 3.33

.012^a

1.17 ± 2.59

.38

2.34 ± 3.16

.15

1.96 ± 7.43

.61

 Do not know (Ref.)

90 (2.2)

–

–

–

–

–

–

–

–

 4-point Likert scale

2.98 (0.70)

0.030

−2.72 ± 0.47

<.001

0.027

−1.99 ± 0.37

<.001

0.033

−2.70 ± 0.45

<.001

0.019

−4.77 ± 1.05

<.001

  (Continuous)

–

–

–

–

–

–

–

–

 Very likely

467 (11.3)

2.94 ± 1.45

<.001^a

1.24 ± 1.12

.030

2.40 ± 1.38

.001^a

2.29 ± 3.23

.16

 Somewhat likely

1587 (38.5)

−0.36 ± 1.20

.56

−0.98 ± 0.93

.039

−0.18 ± 1.14

.75

−2.59 ± 2.67

.06

 Not very likely

1344 (32.6)

0.025

−1.95 ± 1.22

.002^a

0.020

−2.08 ± 0.95

<.001^a

0.015

−1.30 ± 1.16

.028

0.014

−4.29 ± 2.72

.002^a

 Not likely at all

348 (8.4)

−3.75 ± 1.56

<.001^a

−3.23 ± 1.21

<.001^a

−2.48 ± 1.48

.001^a

−9.43 ± 3.47

<.001^a

 Do not know (Ref.)

380 (9.2)

–

–

–

–

–

–

–

–

 Very likely

2169 (52.6)

−4.71 ± 1.55

<.001^a

−5.04 ± 1.19

<.001^a

−4.18 ± 1.47

<.001^a

−14.35 ± 3.41

<.001^a

 Somewhat likely

1632 (39.6)

−2.61 ± 1.57

.001^a

−3.05 ± 1.21

<.001^a

−2.40 ± 1.49

.002^a

−8.58 ± 3.46

<.001^a

 Not very likely

92 (2.2)

0.018

0.78 ± 2.65

.56

0.034

1.08 ± 2.03

.30

0.019

1.83 ± 2.51

.15

0.031

−0.33 ± 5.83

.91

 Not likely at all

31 (0.8)

−0.78 ± 4.06

.71

0.11 ± 3.12

.95

1.26 ± 3.84

.52

0.80 ± 8.95

.86

 Do not know (Ref.)

202 (4.9)

–

–

–

–

–

–

–

–

 Very worried

1215 (29.4)

5.39 ± 1.96

<.001^a

4.16 ± 1.52

<.001^a

2.97 ± 1.88

.002^a

10.47 ± 4.35

<.001^a

 Somewhat worried

1737 (42.1)

0.89 ± 1.93

.37

0.62 ± 1.50

.42

−0.83 ± 1.86

.38

0.51 ± 4.29

.82

 Not very worried

871 (21.1)

0.068

−2.06 ± 2.00

.043

0.061

−1.36 ± 1.55

.09

0.042

−2.49 ± 1.92

.011^a

0.069

−6.12 ± 4.42

.007^a

 Not worried at all

183 (4.4)

−2.36 ± 2.41

.05

−0.70 ± 1.87

.46

−2.46 ± 2.31

.037

−7.63 ± 5.34

.005^a

 Do not know (Ref.)

120 (2.9)

–

–

–

–

–

–

–

–

 Very worried

262 (18.1)

5.21 ± 1.36

<.001^a

4.48 ± 1.05

<.001^a

2.53 ± 1.29

<.001^a

12.10 ± 3.01

<.001^a

 Somewhat worried

340 (23.5)

1.47 ± 1.21

.017

0.43 ± 0.94

.36

−1.38 ± 1.15

.019^a

4.18 ± 2.68

.002^a

 Not very worried

645 (44.5)

0.017

−0.62 ± 0.92

.19

0.024

−1.49 ± 0.71

<.001^a

0.014

−2.24 ± 0.88

<.001^a

0.023

−3.61 ± 2.04

<.001^a

 Not worried at all

184 (12.7)

−1.56 ± 1.60

.06

−1.09 ± 1.24

.09

−2.39 ± 1.52

.02^a

−3.96 ± 3.55

.029^a

 Do not know (Ref.)

17 (1.2)

–

–

–

–

–

–

–

–