Table 2 Principal factor analysis.

From: Differential Plasmodium falciparum surface antigen expression among children with Malarial Retinopathy

Variables

Factor 1

Factor 2

Factor 3

Uniqueness

gpA1

0.64

0.15

0.14

0.43

gpA2

0.79

−0.04

0.13

0.35

dc13

0.23

0.06

0.04

0.93

dc8-1

0.78

−0.07

−0.01

0.45

dc8-2

0.68

−0.14

−0.22

0.63

dc8-3

0.85

0.01

−0.23

0.29

dc8-4

0.36

0.16

0.31

0.66

dc9

0.29

0.29

0.003

0.75

temp

0.13

0.33

0.09

0.82

b1

−0.01

0.80

0.14

0.36

c2

0.2023

0.57

0.064

0.52

Pfsir2a

−0.06

0.88

−0.06

0.26

Pfsir2b

0.04

0.53

−0.02

0.70

1/hct

0.15

−0.48

0.36

0.65

PfHRP2

−0.06

−0.24

0.42

0.75

sICAM-1

−0.1591

0.17

0.76

0.46

Ang-2

0.0561

−0.09

0.66

0.54

Eigenvalue

4.52

1.83

1.14

 

proportion

55.65%

22.57%

14%

 
  1. Principal factor analysis with promax rotation: Three major factors labeled as factor 1, factor 2 and factor 3 were retained on the basis of eigenvalue >1. In bold is the associations (loadings) between the measured variables and the factors (latent variables) that were considered significant (>0.3 or <−0.3). Factor1 represent group A and DC8 var gene subsets and it account for 55.65% of the variation, factor2 represent group B and C var genes, Pfsir2A and Pfsir2B and it accounts for 22.57% of the variation and factor3 consist of PfHRP2, host hematocrit level, plasma ang-2 and sICAM-1 levels and it accounts for 14% of the variation in the data. 1/hct loads positively on factor3 and negatively on factor2. N = 62. kmo = 0.77.
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