Table 1 individual characteristics according to clinical status (nā=ā4 531, except other indication)
From: Environmental determinant of malaria cases among travellers
| Ā | Ā | Clinical malaria-free (n =4 400) | Clinical malaria (n =131) | p |
|---|---|---|---|---|
Age (in years) * | Ā | 25 [22ā29] | 25 [22ā28] | 0.43 |
Manager ā | Ā | Ā | Ā | Ā |
| Ā | No | 3 245 (74%) | 109 (84%) | Ā |
| Ā | Yes | 1 141 (26%) | 21 (16%) | 0.006 |
Year of stay ā | Ā | Ā | Ā | Ā |
| Ā | 2003 | 767 (17%) | 8 (6%) | 0.0001 |
| Ā | 2004 | 1 926 (44%) | 86 (66%) | >0.0001 |
| Ā | 2005 | 1 288 (29%) | 29 (22%) | 0.04 |
| Ā | 2006 | 419 (10%) | 8 (6%) | 0.12 |
Number of sites visited during the stay ā | Ā | Ā | Ā | Ā |
| Ā | <10 sites | 3 377 (77%) | 92 (70%) | Ā |
| Ā | ā„10 sites | 1 023 (23%) | 39 (30%) | 0.05 |
Average length of stay by site ā | Ā | Ā | Ā | Ā |
| Ā | <15ādays | 1341(30%) | 41 (31%) | Ā |
| Ā | ā„15ādays | 3 059 (70%) | 90 (69%) | 0.45 |
Characteristics of the sites of stay | Ā | Ā | Ā | Ā |
Cumulated precipitation (mm of water) * | Ā | 89 [67ā122] | 96 [71ā157] | 0.008 |
Mean Evapotranspiration (mm) * | Ā | 113 [105ā123] | 111 [105ā128,6] | 0.50 |
Mean Water balance (mm) * | Ā | ā36 [(ā)62 - (+)13] | ā25 [(ā)52 - (+)59] | 0.008 |
Mean Minimum temperature (Celsius) * | Ā | 20.3 [19.5-22.5] | 20.0 [18.9-21.1] | 0.0005 |
Mean temperature (Celsius) * | Ā | 27.5 [25.3-27.5] | 27.5 [25.2-27.5] | 0.21 |
Mean Maximum temperature (Celsius) * | Ā | 32.8 [31.5-35.5] | 32,9 [31.4-35.7] | 0.95 |
Mean number of Consecutive dry days Ā§ (in days/month) * | Ā | 3.2 [1.9 ā 7.0] | 3.1 [1.1 ā 6.3] | 0.004 |
Proportion of time spent in urban area * | Ā | 81 [23ā100] | 64 [15 ā 89] | 0.0007 |
NDVI mean (0āmonth of decay) * | Ā | 0.39 [0.29 ā 0.53] | 0.39 [0.31 ā 0.52] | 0.65 |
NDVI mean (1āmonth of decay) * | Ā | 0.38 [0.30 ā 0.50] | 0.39 [0.30 ā 0.52] | 0.44 |
NDVI mean (2āmonths of decay) * | Ā | 0.38 [0.31 ā 0.49] | 0.41 [0.31 ā 0.54] | 0.07 |