Table 3 Personal protection and vector control among malaria case-patients and matched controls, Naxalbari, Darjeeling, West Bengal, India, 2005
From: A malaria outbreak in Naxalbari, Darjeeling district, West Bengal, India, 2005: weaknesses in disease control, important risk factors
|
Characteristics
|
Cases (n = 534)
|
Controls (n = 534)
|
Matched odds ratio
|
|---|
|
#
|
%
|
#
|
%
|
Estimate
|
95% confidence interval
|
|---|
|
Sleeping outdoors every night
|
190
|
36
|
150
|
32
|
3.8a
|
2.2 - 6.5
|
|
Using coils or repellent creams daily
|
120
|
23
|
152
|
29
|
0.1b
|
0.06 - 0.3
|
|
Using bet nets every night
c
|
98
|
18
|
133
|
25
|
0.3d
|
0.1 - 0.5
|
|
Underwent indoor residual spray (DDT)
|
213
|
40
|
220
|
41
|
0.9
|
0.7 - 1.2
|
- a Fraction attributable to sleeping outdoors: 26%
- b Fraction attributable to the failure to use repellents: 69%
- c No insecticide impregnation in place at the time of the outbreak
- d Fraction attributable to the failure to sleep under a bed net: 57%
