Table 1.
Parasite linea | Mean RPM (n) | S.D. | Skewnessb | Kurtosisc | Geo. Meand | 95% CI of Geo. Mean | P valuee |
---|---|---|---|---|---|---|---|
ALH | 4.7 (9) | 5.86 | 0.865 | -0.972 | 2.07 | 0.687, 6.213 | n/a |
ALHi | 3.8 (9) | 9.13 | 2.044 | 2.548 | 0.44 | 0.069, 2.831 | <0.05 |
ALA1 | 0.2 (9) | 0.17 | 0.387 | -1.566 | 0.13 | 0.055, 0.311 | <0.01 |
ALA2 | 0.3 (9) | 0.36 | 1.603 | 1.281 | 0.17 | 0.070, 0.401 | <0.001 |
∂LH | 0.003 (4) | 0.005 | 0.749 | -1.688 | 0.00004 | 3 × 10-8, 4 × 10-5 | 0.0145 |
HLH | 6601 (5) | 5086 | 0.323 | -1.819 | 4917 | 1591, 15196 | n/a |
HLHi | 7636 (5) | 8298 | 0.52 | -1.726 | 3993 | 720.5, 22133 | ns |
HLA | 1791 (5) | 2036 | 0.413 | -1.975 | 802.3 | 112.7, 5713 | <0.01 |
All lines were derived from the P. falciparum Dd2attB strain.
Skewness describes the asymmetry of the distribution. Positive values have distributions asymmetrically skewed to the right (higher values), negative values are skewed to the left (lower values).
Kurtosis quantifies the shape of the distribution as Gaussian or non-Gaussian. Gaussian distributions have 0 kurtosis, distributions with more values in the center have negative kurtosis, and those with more values in the tails have positive kurtosis.
The geometric mean is the antilog of the mean of the log-transformed values, which allows comparison of the transformed mean values in the original units. The variance of the geometric mean is captured by the 95% confidence interval (CI).
P values were calculated using repeated measures ANOVA such that the UpsA promoter lines constituted one group (P value= 0.003) and the hrp3 promoter lines constituted a second group (P value= 0.0056). The Dunnett’s post-test was used for between-line comparisons. The P value for the ∂LH line was derived from a paired t test using matched ALH values. n/a, not applicable.