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Table 4 Univariate analysis of variance for hemoglobin as dependent variable

From: Increased deposition of C3b on red cells with low CR1 and CD55 in a malaria-endemic region of western Kenya: Implications for the development of severe anemia

  

Unadjusted

Adjusted

Groups

Independent Variables

F

B (SE)

95% CI of B

η 2 p

P

F

B (SE)

95% CI of B

η 2 p

P

All

Age Groups (months)

48.5

--

--

0.419

9.6 × 10-38

26.5

--

--

0.287

1.5 × 10-22

N = 342

0 to ≤ 6

--

-1.94 (0.36)

-2.64 to -1.23

0.080

1.2 × 10-7

--

-1.86 (0.34)

-2.54 to -1.18

0.080

1.5 × 10-7

 

>6 to ≤ 36

--

-3.13 (0.25)

-3.62 to -2.64

0.321

4.7 × 10-30

--

-2.59 (0.27)

-3.13 to -2.07

0.219

7.3 × 10-19

 

>36 to ≤ 72

--

-1.94 (0.32)

-2.58 to -1.31

0.097

5.0 × 10-9

--

-1.72 (0.33)

-2.36 to -1.08

0.078

2.3 × 10-7

 

>72 to ≤ 144

--

-0.54 (0.33)

-1.19 to 0.11

0.008

0.10

--

-0.35 (0.33)

-1.01 to 0.30

0.003

0.29

 

>144 to ≤ 288

--

0.20 (0.39)

-0.55 to 0.96

0.001

0.60

--

-0.11 (0.38)

-0.85 to 0.63

2.6 × 10-4

0.77

 

>288 to ≤ 540*

--

--

--

--

--

--

--

--

--

--

 

CR1

63.3

0.005 (0.001)

0.004 to 0.006

0.157

2.7 × 10-14

20.4

0.003 (0.001)

0.002 to 0.004

0.058

8.7 × 10-6

 

CD55

10.3

5.9 × 10-4 (1.8 × 10-4)

2.3 × 10-4 to 9.5 × 10-4

0.029

1.5 × 10-3

5.9

-3.8 × 10-4 (1.6 × 10-4)

-6.9 × 10-4 to -0.7 × 10-4

0.018

0.02

 

Malaria Status†

1.2

0.246 (0.224)

-0.195 to 0.686

0.004

0.27

0.3

-0.103 (0.187)

-0.471 to 0.265

0.001

0.58

 

Parasite Density

4.9

-2.3 × 10-5 (1.0 × 10-5)

-4.3 × 10-5 to -0.3 × 10-5

0.014

0.03

1.1 × 10-5

0.3 × 10-7 (82.7 × 10-7)

-1.6 × 10-5 to 1.6 × 10-5

3.5 × 10-8

1.00

 

ICBC

11.9

0.056 (0.016)

0.024 to 0.087

0.034

6.3 × 10-4

0.02

0.002 (0.013)

-0.024 to 0.027

6.0 × 10-5

0.89

 

%C3b-positive Red Cells

77.6

-0.070 (0.008)

-0.085 to -0.054

0.186

6.6 × 10-17

10.5

-0.025 (0.008)

-0.040 to -0.010

0.031

1.3 × 10-3

Malaria-treated

Age Groups(months)

27.2

--

--

0.486

2.7 × 10-19

15.3

--

--

0.355

6.0 × 10-12

N = 150

0 to ≤ 6

--

-3.09 (0.68)

-4.42 to -1.75

0.127

1.1 × 10-5

--

-2.74 (0.68)

-4.09 to -1.39

0.103

1.0 × 10-4

 

>6 to ≤ 36

--

-2.98 (0.43)

-3.83 to -2.12

0.247

1.7 × 10-10

--

-2.54 (0.48)

-3.48 to -1.60

0.170

3.7 × 10-7

 

>36 to ≤ 72

--

-1.53 (0.48)

-2.47 to -0.59

0.067

1.7 × 10-3

--

-1.45 (0.48)

-2.39 to -0.50

0.062

2.9 × 10-3

 

>72 to ≤ 144

--

-0.12 (0.48)

-1.06 to 0.82

4.5 × 10-4

0.80

--

-0.03 (0.48)

-0.91 to 0.97

3.0 × 10-5

0.95

 

>144 to ≤ 288

--

-0.31 (0.58)

-1.46 to 0.85

0.002

0.60

--

-0.46 (0.56)

-1.56 to 0.65

0.005

0.41

 

>288 to ≤ 540*

--

--

--

 

--

--

--

--

--

--

 

CR1

28.2

0.005 (0.001)

0.003 to 0.007

0.160

3.9 × 10-7

13.0

0.003 (0.001)

0.002 to 0.005

0.085

4.4 × 10-4

 

CD55

7.2

7.0 × 10-4 (2.6 × 10-4)

1.9 × 10-4 to 12.2 × 10-4

0.047

8.1 × 10-3

2.0

-3.2 × 10-4 (2.2 × 10-4)

-7.6 × 10-4 to 1.3 × 10-4

0.014

0.16

 

Parasite Density

5.0

-2.2 × 10-5 (1.0 × 10-5)

-4.1 × 10-5 to -0.3 × 10-5

0.033

0.03

0.002

3.2 × 10-7 (0.7 × 10-7)

-1.4 × 10-5 to 1.5 × 10-5

1.4 × 10-5

0.96

 

ICBC

3.2

0.039 (0.022)

0.004 to 0.083

0.021

0.08

0.3

0.008 (0.017)

-0.024 to 0.041

0.002

0.61

 

%C3b-positive Red Cells

34.9

-0.057 (0.010)

-0.075 to -0.038

0.191

2.3 × 10-8

1.9

-0.012 (0.009)

-0.030 to 0.005

0.014

0.17

Malaria Negative

Age Groups (months)

26.4

--

--

0.415

4.4 × 10-20

14.4

--

--

0.284

7.0 × 10-12

N = 192

0 to ≤ 6

--

-1.65 (0.44)

-2.51 to -0.79

0.072

2.1 × 10-4

--

-1.63 (0.42)

-2.46 to -0.80

0.077

1.4 × 10-4

 

>6 to ≤ 36

--

-3.15 (0.32)

-3.78 to -2.52

0.342

1.2 × 10-18

--

-2.62 (0.34)

-3.30 to -1.95

0.246

8.0 × 10-13

 

>36 to ≤ 72

--

-2.41 (0.51)

-3.43 to -1.40

0.106

5.2 × 10-6

--

-1.97 (0.51)

-2.97 to -0.97

0.077

1.4 × 10-4

 

>72 to ≤ 144

--

-1.15 (0.56)

-2.25 to -0.04

0.022

0.04

--

-0.98 (0.55)

-2.06 to 0.10

0.017

0.07

 

>144 to ≤ 288

--

0.65 (0.53)

-0.39 to 1.69

0.008

0.22

--

0.31 (0.52)

-0.71 to 1.33

0.002

0.55

 

>288 to ≤ 540*

--

--

--

--

--

--

--

--

--

--

 

CR1

33.9

0.005 (0.001)

0.003 to 0.006

0.151

2.4 × 10-8

7.6

0.002 (0.001)

0.001 to 0.004

0.040

0.01

 

CD55

3.5

4.9 × 10-4 (2.6 × 10-4)

-0.2 × 10-4 to 10.0 × 10-4

0.018

0.06

5.0

-4.9 × 10-4 (2.2 × 10-4)

-9.3 × 10-4 to -0.6 × 10-4

0.027

0.03

 

ICBC

8.6

0.068 (0.023)

0.022 to 0.113

0.043

3.7 × 10-3

0.4

-0.012 (0.020)

-0.052 to 0.027

0.002

0.53

 

%C3b-positive Red Cells

46.3

-0.090 (0.013)

-0.116 to -0.064

0.196

1.3 × 10-10

10.7

-0.043 (0.013)

-0.069 to -0.017

0.056

1.3 × 10-3

  1. *B for this group set to '0' as reference.
  2. † B for malaria-treated group was set to '0' as reference.
  3. η 2 p = Partial Eta squared or coefficient of non-linear correlation.
  4. ICBC = IC binding capacity.