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Table 2 Cumulative incidence of malaria per 100 persons according to work status in 24 months.

From: Performance of self-diagnosis and standby treatment of malaria in international oilfield service employees in the field

   Cumulative incidence (%)
of malaria in 24 months
[95%CI]
 
   Visitor
(N = 342)
Rotator
(N = 795)
Long term
(N = 1122)
p-value*
Malaria Presumptive 2.3
[0.7–3.9]
6.2
[4.5–7.9]
13.7
[11.7–15.7]
<0.001
  Doctor's diagnosis 2.0
[0.5–3.5]
5.7
[4.1–7.3]
12.8
[10.8–14.8]
<0.001
  Laboratory confirmed 1.8
[0.4–3.2]
4.3
[2.9–5.7]
9.7
[8.0–11.4]
<0.001
Hospitalization for malaria Doctor's diagnosis 0.6
[0.0–1.4]
1.6
[0.7–2.5]
1.5 [0.8–2.2] 0.6
  Laboratory confirmed 0.6 [0.0–1.4] 1.6
[0.7–2.5]
1.2
[0.6–1.8]
0.5
  1. *p-value for malaria diagnosis was obtained by χ2-test and for hospitalization with Fisher's exact test. Those who responded to belong to the 'other' group (N = 91), instead of the solicited groups, were excluded as their global time of possible exposure to malaria was unclear.