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Volume 10, Number 2—February 2004
THEME ISSUE
2004 SARS Edition
Infection Control

SARS Transmission among Hospital Workers in Hong Kong

Joseph T.F. Lau*Comments to Author , Kitty S. Fung*, Tze Wai Wong*, Jean H. Kim*, Eric Wong*, Sydney Chung*, Deborah Ho*, Louis Y. Chan*, S.F. Lui†, and Augustine Cheng*
Author affiliations: *Chinese University of Hong Kong, Special Administrative Region, People’s Republic of China (SAR); †Hospital Authority, Government of Hong Kong, Hong Kong SAR

Main Article

Table 4

Percentage distributions of variables related to training, patient care, social contact and mask compliancea

Characteristic Control 
(n = 143)
Case 
(n = 72)
Matched OR (exact 95% CI)
p value
(exact)
n % N %
Length of SARS infection control training






None
40
28.0
36
50.0
1.00

<2hrs
67
46.9
33
45.8
0.47 (0.18 to 1.14)
0.1028
>2hrs
36
25.2
3
4.2
0.03 (0.001 to 0.20)
<0.0001
Understood infection control measuresb






Yes
130
91.5
54
76.1
1.00

No
12
8.5
17
23.9
3.14 (1.35 to 7.73)
0.0065
Acquired updated information






No
5
3.5
8
11.1
1.00

Yes
136
96.5
64
88.9
0.27 (0.06 to 1.04)
0.0574
High risk procedures with SARS patientsc






No
115
86.5
60
83.3
1.00

Yes
18
13.5
12
16.7
1.22 (0.45 to 3.14)
0.8061
Direct contact with SARS patients






No/Not sure
38
26.6
27
37.5
1.00

Yes
105
73.4
45
62.5
0.57 (0.28 to 1.14)
0.1197
Direct contact with patients in general






No/Not sure
7
4.9
3
4.2
1.68
1.000
Yes
136
95.1
69
95.8
(0.07 to 117.74)

Seconded from another unit






No
77
53.8
46
63.9
1.00

Yes
66
46.2
26
36.1
0.60 (0.29 to 1.21)
0.1671
Social contact with SARS patients






No/Not sure
95
66.4
55
76.4
1.00

Yes
48
33.6
17
23.6
0.59 (0.28 to 1.19)
0.1592
Frequency of touching the N95d






Most of the time/Always
33
23.4
19
29.2
1.32 (0.63 to 2.74)
0.5205
General problems with maske
68
48.6
28
40.6
0.66 (0.34 to 1.27)
0.2407
Problems with mask fitf
70
49.0
33
47.8
1.00 (0.51 to 1.95)
1.0000
Problems with fogging of gogglesg
75
52.8
26
40.0
0.61 (0.31 to 1.17)
0.1520
Overall problems in general complianceh 69 50.0 29 41.4 0.58 (0.25 to 1.33) 0.2264

aOR, odds ratio; CI, confidence interval; SARS, severe acute respiratory syndrome.
bInformation on 1 control and 1 case missing.
cInformation on 10 controls with direct contact with SARS patients missing.
dExcluded 2 controls and 6 cases who did not use N95 mask; information on 1 case missing.
eExcluded 1 case who did not use mask; information on 3 controls and 2 cases missing.
fExcluded 1 case who did not use mask; information on 2 cases missing.
gExcluded 3 cases who did not use goggle; information on 1 control and 3 cases missing
hExcluded 1 case who did not use any equipment; information on 5 controls and 1 case missing

Main Article

Page created: January 25, 2011
Page updated: January 25, 2011
Page reviewed: January 25, 2011
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