Table 1 Distribution of answers in hot and other regions (see Supplement 1 for full list of answers).

1

Under 35 years old

36–65 years old

Over 65 years old

178/951 (18.7%)

649/951 (68.2%)

124/951 (13.0%)

196/1199 (16.3%)

849/1199 (70.8%)

154/1199 (12.8%)

2.23

(0.3279)

2

Male

Female

469/951 (49.3%)

482/951 (50.7%)

615/1199 (51.3%)

584/1199 (48.7%)

0.75

(0.3865)

3

Hot regions (i.e. Emilia-Romagna, Lombardy, Piedmont, Veneto)

Other regions

951/951 (100%)

0

0

1199/1199 (100%)

-

4

Public facility

Private facility accredited to the public health service

Private facility not accredited to the public health service

Retired private consultant

598/951 (62.9%)

248/951 (26.1%)

29/951 (3.0%)

76/951 (8.0%)

812/1199 (67.7%)

250/1199 (20.9%)

47/1199 (3.9%)

90/1199 (7.5%)

5.3

(0.0213)*

5

Resident

Post-doc fellow, PhD student or outpatient specialist

Research fellow

Associate or full professor

Staff radiologist

Medical director

Private consultant

102/951 (10.7%)

11/951 (1.2%)

4/951 (0.4%)

12/951 (1.3%)

496/951 (52.2%)

81/951 (8.5%)

245/951 (25.7%)

118/1199 (9.8%)

29/1199 (2.4%)

14/1199 (1.2%)

17/1199 (1.4%)

631/1199 (52.6%)

129/1199 (10.8%)

261/1199 (21.8%)

4.48

(0.0343)*

6°

Single

Partnered

Married

I have son(s) and/or daughter(s)

I have relatives other than son(s), daughter(s), partner and/or spouse

163/912 (17.9%)

166/912 (18.2%)

543/912 (59.5%)

407/912 (44.6%)

29/912 (3.2%)

190/1164 (16.3%)

215/1164 (18.5%)

700/1164 (60.1%)

552/1164 (47.4%)

45/1164 (3.9%)

0.76

(0.3833)

7°

None

Diabetes

Cardiovascular diseases

Respiratory diseases

Immunological disorders

Cancer

Anxiety

Depression

Other

634/912 (69.5%)

24/912 (2.6%)

121/912 (13.3%)

40/912 (4.4%)

6/912 (0.7%)

40/912 (4.4%)

32/912 (3.5%)

16/912 (1.7%)

82/912 (9.0%)

827/1164 (71.0%)

26/1164 (2.2%)

166/1164 (14.3%)

43/1164 (3.7%)

9/1164 (0.8%)

26/1164 (2.2%)

39/1164 (3.3%)

17/1164 (1.5%)

89/1164 (7.6%)

0.5

(0.4795)

8

Asymptomatic with negative testing

Asymptomatic with positive testing

Symptomatic with negative testing

Symptomatic with positive testing

Asymptomatic, no testing performed

Symptomatic, no testing performed

446/912 (48.9%)

10/912 (1.1%)

22/912 (2.4%)

10/912 (1.1%)

408/912 (44.7%)

16/912 (1.8%)

622/1164 (53.5%)

4/1164 (0.3%)

8/1164 (0.7%)

7/1164 (0.6%)

518/1164 (44.5%)

5/1164 (0.4%)

19.18

(< 0.0001)*

9

Yes

No

693/912 (76.0%)

219/912 (24.0%)

853/1164 (73.3%)

311/1164 (26.7%)

1.83

(0.1761)

10

No

Mildly

Moderately

Severely

107/912 (11.7%)

206/912 (22.6%)

326/912 (35.8%)

273/912 (29.9%)

123/1164 (10.6%)

299/1164 (25.7%)

404/1164 (34.7%)

338/1164 (29.0%)

0.75

(0.3865)

11

Less than 35 h

36–50 h

51–65 h

More than 65 h

108/865 (12.5%)

613/865 (70.9%)

128/865 (14.8%)

16/865 (1.8%)

158/1107 (14.3%)

789/1107 (71.3%)

122/1107 (11.0%)

38/1107 (3.4%)

1.18

(0.2774)

12

Less than 35 h

36–50 h

51–65 h

More than 65 h

351/865 (40.6%)

435/865 (50.3%)

71/865 (8.2%)

8/865 (0.9%)

479/1107 (43.3%)

558/1107 (50.4%)

59/1107 (5.3%)

11/1107 (1.0%)

1.34

(0.2470)

13

0–25%

25–50%

50–75%

75–100%

419/865 (48.4%)

204/865 (23.6%)

155/865 (17.9%)

87/865 (10.1%)

689/1107 (62.2%)

201/1107 (18.2%)

135/1107 (12.2%)

82/1107 (7.4%)

18.6

(< 0.0001)*

14°

I don't manage COVID-19 patients

Diagnosis of COVID-19

Follow-up of COVID-19 patients

Severe forms and complications of COVID-19

Other

196/865 (22.7%)

546/865 (63.1%)

482/865 (55.7%)

154/865 (17.8%)

94/865 (10.9%)

425/1107 (38.4%)

560/1107 (50.6%)

392/1107 (35.4%)

115/1107 (10.4%)

123/1107 (11.1%)

54.99

(< 0.0001)*

15

Never

Rarely

Quite often

Very often

229/865 (26.5%)

345/865 (39.9%)

259/865 (29.9%)

32/865 (3.7%)

444/1107 (40.1%)

454/1107 (41.0%)

194/1107 (17.5%)

15/1107 (1.4%)

55.13

(< 0.0001)*

16°

Emergency procedures

Oncologic imaging

Non-oncologic imaging

Urgent or non-deferrable interventional procedures

Elective interventional procedures

Other

625/865 (72.2%)

614/865 (71.0%)

406/865 (46.9%)

130/865 (15.0%)

30/865 (3.5%)

109/865 (12.6%)

784/1107 (70.8%)

730/1107 (65.9%)

441/1107 (39.8%)

123/1107 (11.1%)

21/1107 (1.9%)

168/1107 (15.2%)

0.42

(0.5169)

17

No

Mildly

Moderately

Severely

23/865 (2.7%)

105/865 (12.1%)

455/865 (52.6%)

282/865 (32.6%)

39/1107 (3.5%)

128/1107 (11.6%)

592/1107 (53.5%)

348/1107 (31.4%)

0.01

(0.9203)

18

No

Mildly

Moderately

Severely

62/865 (7.2%)

117/865 (13.5%)

350/865 (40.5%)

336/865 (38.8%)

95/1107 (8.6%)

166/1107 (15.0%)

455/1107 (41.1%)

391/1107 (35.3%)

2.17

(0.1407)

19

No

Mildly

Moderately

Severely

487/865 (56.3%)

205/865 (23.7%)

132/865 (15.3%)

41/865 (4.7%)

647/1107 (58.4%)

208/1107 (18.8%)

180/1107 (16.3%)

72/1107 (6.5%)

2.03

(0.1542)

20

No

Yes, they have improved

Yes, they have worsened

I hardly see my colleagues any more

497/865 (57.5%)

117/865 (13.5%)

108/865 (12.5%)

143/865 (16.5%)

648/1107 (58.5%)

115/1107 (10.4%)

146/1107 (13.2%)

198/1107 (17.9%)

0.88

(0.3482)

21

None

Less than 10%

10–30%

More than 30%

278/865 (32.1%)

482/865 (55.7%)

96/865 (11.1%)

9/865 (1.1%)

624/1107 (56.4%)

447/1107 (40.4%)

32/1107 (2.9%)

4/1107 (0.3%)

56.43

(< 0.0001)*

22

0–25%

25–50%

50–75%

75–100%

346/865 (40.0%)

269/865 (31.1%)

158/865 (18.3%)

92/865 (10.6%)

508/1107 (45.9%)

326/1107 (29.4%)

170/1107 (15.4%)

103/1107 (9.3%)

4.27

(0.0388)*

23

No

Mildly

Moderately

Severely

145/865 (16.8%)

226/865 (26.1%)

345/865 (39.9%)

149/865 (17.2%)

171/1107 (15.5%)

318/1107 (28.7%)

443/1107 (40.0%)

175/1107 (15.8%)

0.28

(0.5967)

24

Yes

No

569/865 (65.8%)

296/865 (34.2%)

710/1107 (64.1%)

397/1107 (35.9%)

0.51

(0.4751)

25

Yes

No

806/865 (93.2%)

59/865 (6.8%)

996/1107 (90.0%)

111/1107 (10.0%)

5.94

(0.0148)*

26

0–25%

25–50%

50–75%

75–100%

63/856 (7.4%)

270/856 (31.5%)

372/856 (43.5%)

151/856 (17.6%)

84/1095 (7.7%)

352/1095 (32.1%)

475/1095 (43.4%)

184/1095 (16.8%)

0.13

(0.7184)

27

Yes

No

Don’t know

80/856 (9.3%)

425/856 (49.7%)

351/856 (41.0%)

96/1095 (8.8%)

611/1095 (55.8%)

388/1095 (35.4%)

1.04

(0.3078)

28°

Hydroalcoholic gel

Masks

Visors, goggles and protective gowns

Other

No

203/856 (23.7%)

436/856 (50.9%)

442/856 (51.6%)

45/856 (5.3%)

302/856 (35.3%)

296/1095 (27.0%)

627/1095 (57.3%)

655/1095 (59.8%)

64/1095 (5.8%)

308/1095 (28.1%)

11.11

(0.0009)*

29

Yes (symptomatic)

Yes (higher risk)

Yes (psychiatric conditions)

No

35/856 (4.1%)

16/856 (1.9%)

13/856 (1.5%)

792/856 (92.5%)

13/1095 (1.2%)

31/1095 (2.8%)

13/1095 (1.2%)

1038/1095 (94.8%)

3.88

(0.0489)*

30

No

Mildly

Moderately

Severely

225/856 (26.3%)

269/856 (31.4%)

280/856 (32.7%)

82/856 (9.6%)

258/1095 (23.6%)

378/1095 (34.5%)

361/1095 (33.0%)

98/1095 (8.9%)

0.01

(0.9203)

31

Yes

No

30/827 (3.6%)

797/827 (96.4%)

24/1070 (2.2%)

1046/1070 (97.8%)

2.75

(0.0973)

32°

Alcohol

Tobacco

Other

None

65/827 (7.9%)

46/827 (5.6%)

22/827 (2.7%)

716/827 (86.6%)

50/1070 (4.7%)

48/1070 (4.5%)

33/1070 (3.1%)

954/1070 (89.2%)

2.71

(0.0997)

33

No

Mildly

Moderately

Severely

336/827 (40.6%)

286/827 (34.6%)

157/827 (19.0%)

48/827 (5.8%)

456/1070 (42.6%)

352/1070 (32.9%)

210/1070 (19.6%)

52/1070 (4.9%)

0.01

(0.9203)

34

No

Mildly

Moderately

Severely

433/827 (52.4%)

212/827 (25.6%)

153/827 (18.5%)

29/827 (3.5%)

556/1070 (52.0%)

302/1070 (28.2%)

186/1070 (17.4%)

26/1070 (2.4%)

1.23

(0.2674)

35

Never

Rarely

Quite often

Very often

113/827 (13.7%)

449/827 (54.3%)

231/827 (27.9%)

34/827 (4.1%)

179/1070 (16.7%)

598/1070 (55.9%)

261/1070 (24.4%)

32/1070 (3.0%)

4.66

(0.0309)*

36

Never

Rarely

Quite often

Very often

10/827 (1.2%)

399/827 (48.3%)

388/827 (46.9%)

30/827 (3.6%)

14/1070 (1.3%)

511/1070 (47.8%)

506/1070 (47.3%)

39/1070 (3.6%)

0.01

(0.9203)

37

Never

Rarely

Quite often

Very often

210/827 (25.4%)

345/827 (41.7%)

229/827 (27.7%)

43/827 (5.2%)

280/1070 (26.2%)

411/1070 (38.4%)

332/1070 (31.0%)

47/1070 (4.4%)

1.22

(0.2694)

38

Never

Rarely

Quite often

Very often

113/827 (13.6%)

362/827 (43.8%)

320/827 (38.7%)

32/827 (3.9%)

134/1070 (12.5%)

530/1070 (49.5%)

361/1070 (33.8%)

45/1070 (4.2%)

3.96

(0.0466)*

39

More

Less

Nothing has changed

311/827 (37.6%)

260/827 (31.4%)

256/827 (31.0%)

397/1070 (37.1%)

354/1070 (33.1%)

319/1070 (29.8%)

0.5

(0.4795)

40

Never

Rarely

Quite often

Very often

327/827 (39.5%)

372/827 (45.0%)

113/827 (13.7%)

15/827 (1.8%)

412/1070 (38.5%)

491/1070 (45.9%)

150/1070 (14.0%)

17/1070 (1.6%)

0

(1)

41

Never

Rarely

Quite often

Very often

593/827 (71.7%)

192/827 (23.2%)

37/827 (4.5%)

5/827 (0.6%)

762/1070 (71.2%)

250/1070 (23.4%)

46/1070 (4.3%)

12/1070 (1.1%)

0.05

(0.8231)

42

More

Less

Nothing has changed

34/827 (4.1%)

524/827 (63.4%)

269/827 (32.5%)

51/1070 (4.8%)

627/1070 (58.6%)

392/1070 (36.6%)

3.29

(0.0697)