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Table 3 Univariate logistic regression analysis

From: Which preventive measures might protect health care workers from SARS?

Risk factors

 

SARS case

Control

OR (95% CI)

P value

Number of gowns worn

Single

42

189

2.12 (1.36~3.31)

<0.001

 

Double

49

468

  

Number of multilayered cotton mask

Single

32

116

2.53 (1.57~4.07)

<0.001

Worn

Double

59

541

  

Number of pairs of gloves worn

Single

81

400

5.20 (2.65~10.23)

<0.001

 

Double

10

257

  

Frequency of wearing shoe cover

Never

55

237

3.80 (2.24~6.45)

<0.001

 

Sometimes

8

26

5.04 (2.04~12.48)

<0.001

 

Often

7

50

2.29 (0.93~5.67)

>0.05

 

Every time

21

344

1.00

 

Frequency of wearing cap

Never

68

380

1.79 (1.03~3.10)

<0.05

 

Sometimes

3

63

0.48 (0.14~1.67)

>0.05

 

Often

2

34

0.59 (0.13~2.65)

>0.05

 

Every time

18

180

1.00

 

Frequency of wearing face shield in

Never

89

506

4.05 (0.54~30.34)

>0.05

SARS ward

Sometimes

1

107

0.22 (0.01~3.56)

>0.05

 

Often

0

21

---

---

 

Every time

1

23

1.00

 

Frequency of wearing goggles while

Never

88

483

7.83 (1.07~57.63)

<0.05

performing operation for SARS patients

Sometimes

2

103

0.84 (0.07~9.45)

>0.05

 

Often

0

28

---

---

 

Every time

1

43

1.00

 

Frequency of washing uncovered skin

Never

62

339

3.29 (1.29~8.43)

<0.05

after caring for SARS patients

Sometimes

17

142

2.16 (0.77~6.05)

>0.05

 

Often

7

86

1.47 (0.45~4.79)

>0.05

 

Every time

5

90

1.00

 

Frequency of washing hands after caring

Never

23

186

0.89 (0.52~1.51)

>0.05

for SARS patients

Sometimes

5

35

1.03 (0.38~2.75)

>0.05

 

Often

18

113

1.14 (0.64~2.06)

>0.05

 

Every time

45

323

1.00

 

Frequency of washing nasal cavity after

Never

66

398

3.21 (0.98~10.53)

>0.05

caring for SARS patients

Sometimes

20

154

2.51 (0.72~8.77)

>0.05

 

Often

2

47

0.82 (0.13~5.13)

>0.05

 

Every time

3

58

1.00

 

Frequency of washing oral cavity after

Never

69

376

3.26 (1.15~9.21)

<0.05

caring for SARS patients

Sometimes

17

147

2.05 (0.67~6.33)

>0.05

 

Often

1

63

0.28 (0.03~2.59)

>0.05

 

Every time

4

71

1.00

 

Special training for SARS

No

74

421

2.44 (1.41~4.23)

<0.001

 

Yes

17

236

  

Performing tracheotomy

Yes

6

11

4.15 (1.50~11.50)

<0.01

 

No

85

646

  

Performing tracheal intubations

Yes

16

17

8.03 (3.90~16.56)

<0.001

 

No

75

640

  

Caring for "Super Spreading Patient "

Yes

69

268

4.55 (2.75~7.54)

<0.001

 

No

22

389

  

Avoiding face to face while caring for

Never

40

182

1.00

 

patient

Sometimes

23

200

0.64 (0.36~1.10)

>0.05

 

Often

24

173

0.53 (0.31~0.93)

<0.05

 

Every time

4

113

0.16 (0.06~0.46)

<0.001

Method of air ventilation in offices and

ACV

20

295

1.00

 

SARS wards

NV

54

333

0.28 (0.14~0.54)

<0.001

 

NVEEF

17

29

0.17 (0.06~0.25)

<0.001

Type of equipment for washing hands

AT

5

125

1.00

 
 

NAT

85

509

4.18 (1.66~10.51)

<0.001

 

Others

1

23

1.09 (0.12~9.74)

>0.05

  1. ACV: Artificial central ventilation; NV: Natural ventilation; NVEEF: Natural ventilation and additional electronic exhaust fan; AT: Automatic tap; NAT: Non-automatic tap