Volume 14, Number 10—October 2008
Dispatch
Molecular Surveillance for Multidrug-Resistant Plasmodium falciparum, Cambodia
Naman K. Shah, Alisa P. Alker, Rithy Sem, Agustina Ika Susanti, Sinuon Muth, Jason D. Maguire, Socheat Duong, Frederic Ariey, Steven R Meshnick, and Chansuda Wongsrichanalai
Table 2
Univariate and multivariate linear regression analyses of the association between surveillance site and pfmdr1 copy no., Cambodia
| Site | No. | Mean | Univariate linear regression |
Multivariate linear regression* |
||||
|---|---|---|---|---|---|---|---|---|
| β† | 95% CI‡ | Predicted mean | β† | 95% CI‡ | ||||
| Rattanakiri | 285 | 1.09 | 0 | 1.03 | 0 | |||
| Memut | 165 | 1.09 | –0.001 | –0.056 to 0.053 | 1.02 | 0.047 | –0.019 to 0.112 | |
| Kampong Seila | 10 | 1.53 | –0.234 | –0.412 to –0.055 | 1.35 | –0.184 | –0.363 to –0.006 | |
| Pailin | 143 | 1.70 | –0.232 | –0.289 to–0.175 | 1.34 | –0.217 | –0.276 to –0.159 | |
| Chumkiri | 109 | 2.24 | –0.393 | –0.456 to –0.331 | 1.72 | –0.432 | –0.503 to –0.362 | |
*Controlled for parasitemia and year.
†The coefficient estimating the relationship between site and inverse-transformed pfmdr1 copy no.
‡CI, confidence interval.
