Table 4. Variation in number of copies of Plasmodium vivax mdr-1 gene among isolates from persons from France who reported having traveled during the previous month to malaria-endemic continents, 1997–2010.
| Variable | South America | Asia | Africa | Total | p value |
|---|---|---|---|---|---|
| No. isolates | 41 | 60 | 14 | 115 | |
| Isolates with >1 Pvmdr-1 copy | |||||
| No. (%; 95% CI) | 14 (34; 18–57) | 23 (38; 24–57) | 8 (57; 24–100) | 45 (39; 30–49) | 0.30* |
| Range | 1–2 | 1–3 | 1–2 | 1–3 | |
| Copies, no. (%) | 0.49* | ||||
| 1 | 26 (63) | 37 (62) | 6 (43) | 70 (61) | |
| 2 | 14 (34) | 22 (37) | 8 (57) | 44 (38) | |
| 3 | 0 | 1 (2) | 0 | 1 (1) | |
| Mean (95% CI) | 1.20 (1.05–1.35) | 1.40 (1.27–1.53) | 1.35 (1.10–1.59) | 1.32 (1.22–1.41) | 0.12† |
*χ2 test. †1-Way analysis of variance.