Table 3

 Factors other than age associated with risk of death from imported P falciparum malaria in UK between 1987 and 2006

Risk factorNo (%) of fatal casesOdds ratio (95% CI) of death
CrudeP valueAdjusted*P value
Purpose of visit to country with endemic malaria:
 Tourism81/2740 (2.96)9.4 (6.1 to 14.7)<0.0018.2 (5.1 to 13.3)<0.001
 Visiting friends and relatives26/8077 (0.32)
UK region where disease presented:
 Where least malaria is seen10/119 (8.40)29.3 (14.5 to 59.2)<0.00118.2 (8.6 to 38.3)<0.001
 Where most malaria is seen50/15 993 (0.31)
Calendar month of presentation:
 December49/1922 (2.55)4.5 (3.2 to 6.2)<0.0013.7 (2.6 to 5.2)<0.001
 All other months135/23 132 (0.58)
Reported use of effective prophylaxis:
 No99/10 222 (0.97)1.8 (0.7 to 4.3)0.2202.0 (0.81 to 4.9)0.13
 Yes5/903 (0.55)
Birth in African country with endemic malaria:
 No142/5849 (2.43)6.2 (4.3 to 8.9)<0.0014.6 (3.1 to 9.9)<0.001
 Yes36/8937 (0.40)

*Adjusted for age (continuous) and for other listed risk factors.