Table 2

Distinguishing characteristics of the African patients and factors associated with imported malaria according to source, Equatorial Guinea or the rest of Africa. Barcelona, 1989–2007.

Equatorial Guinea

279

(57,1%)

Rest of Africa

210

(42,9%)

ORc

(95%CI)

ORa

(95%CI)

p-value

Age

from 15 to 37 yr

153 (54.8)

153 (73.3)

1

1

-

Children < 15 yr

61 (21.9)

21 (10)

2.9 (1.7–5)

3.1 (1.7–5.8)

< 0.001

Older than 37 yr

62 (22.2)

33 (15.7)

1.9 (1.2–3.1)

2 (1.1–3.5)

0.02

Unknown

3 (1.1)

2 (1)

-

-

-

Sex

Male

93 (33.3)

147 (70)

1

1

-

Female

186 (66.7)

63 (30)

5.1 (3.5–7.6)

4.8 (3.1–7.5)

< 0.001

Inner city Resident

Yes

20 (7.2)

48 (22.9)

1

1

-

No

244 (87.5)

136 (64.8)

4.3 (2.5–7.6)

4 (2.1–7.6)

< 0.001

Unknown

15 (5.4)

26 (12.4)

1.4 (0.6–1.9)

1.1 (0.4–3)

0.79

Species

Others

29 (10.4)

24 (11.4)

1

-

-

P. falciparum

213 (76.3)

160 (76.6)

1.1 (0.6–2)

Plasmodium sp

37 (13.3)

26 (12.4)

1.2 (0.6–2.5)

VFR

No

42 (15.1)

56 (26.7)

1

1

-

Yes

221 (79.2)

138 (65.7)

2.1 (1.4–3.4)

2.2 (1.3–3.9)

0.004

Unknown

16 (5.7)

16 (7.6)

1.3 (0.6–3)

1.9 (0.7–4.8)

0.21

Hospital Admission

Yes

39 (14)

69 (32.9)

1

1

-

No

240 (86)

141 (67.1)

3 (1.9–4.7)

2.2 (1.1–4.4)

0.02

Declaring Center

HCP

24 (8.6)

58 (27.6)

1

1

-

UMTSID

214 (76.7)

112 (53.3)

4.6 (2.7–7.8)

3.2 (1.6–6.3)

0.001

Others

41 (14.7)

40 (19)

2.4 (1.3–4.7)

1.8 (0.8–3.8)

0.13

Chemo-prophylaxis*

Correct

0 (0)

1 (0.7)

-

-

-

Not treated

149 (67.4)

90 (65.2)

Abandoned

11 (5)

7 (5.1)

Unknown

61 (27.6)

40 (29)

M: median, RI: interquartile range, VFR: immigrant visiting friends and relatives, HCP: Hospital Clinic. UMTSID: Unitat de Medicina Tropical i Salut Internacional Drassanes. OR c: crude odds ratio. OR a: adjusted odds ratio.

* Calculations performed in a total of 359 VFR (indication of chemoprophylaxis).

Millet et al. Malaria Journal 2009 8:111   doi:10.1186/1475-2875-8-111