Experiment (Date)

Mosquito Group (Ookinete density per μl of blood)

Test Statistic

Statistical Results


1
  
100

400

2,000
 
(August 2007)

0

Hazard Ratio (HR)

1.1413

1.4261

2.2004
 
 
HR C.I.

(0.87, 1.50)

(1.17, 1.74)

(1.77, 2.74)
 
 
MantelCox

0.9124

12.4278

52.6238
 
 
Pvalue

0.3395

0.0004*

<0.0001*
 

100

HR
 
1.4003

1.9702
 
 
HR C.I.
 
(1.09, 1.80)

(1.52, 2.55)
 
 
MantelCox
 
6.9297

27.2606
 
 
Pvalue
 
0.0085*

<0.0001*
 

400

HR
  
1.4023
 
 
HR C.I.
  
(1.16, 1.70)
 
 
MantelCox
  
12.2886
 
 
Pvalue
  
0.0005*
 

All 4 Groups

Logrank
   
55.89

 
Pvalue
   
<0.0001*

2
  
100

400

2,000
 
(April 2008)

0

HR

0.7312

1.1786

1.7447
 
 
HR C.I.

(0.58, 0.92)

(0.97, 1.44)

(1.38, 2.20)
 
 
MantelCox

7.0017

2.6747

22.3554
 
 
Pvalue

0.0081*

0.1020

<0.0001*
 

100

HR
 
1.6063

2.1607
 
 
HR C.I.
 
(1.27, 2.03)

(1.65, 2.82)
 
 
MantelCox
 
15.7261

33.6528
 
 
Pvalue
 
<0.0001*

<0.0001*
 

400

HR
  
1.3186
 
 
HR C.I.
  
(1.05, 1.66)
 
 
MantelCox
  
5.6392
 
 
Pvalue
  
0.0176*
 

All 4 Groups

Logrank
   
31.20

 
Pvalue
   
<0.0001*

3
  
50

250

1,000
 
(July 2008)

0

HR

2.2198

2.1914

2.5451
 
 
HR C.I.

(1.77, 2.79)

(1.76, 2.73)

(2.06, 3.15)
 
 
MantelCox

49.5610

51.1026

78.9376
 
 
Pvalue

<0.0001*

<0.0001*

<0.0001*
 

50

HR
 
1.0144

1.1677
 
 
HR C.I.
 
(0.86, 1.20)

(0.99, 1.37)
 
 
MantelCox
 
0.0283

3.7481
 
 
Pvalue
 
0.8664

0.0529
 

250

HR
  
1.1543
 
 
HR C.I.
  
(0.99, 1.34)
 
 
MantelCox
  
3.5264
 
 
Pvalue
  
0.0604
 

All 4 Groups

Logrank
   
36.61

 
Pvalue
   
<0.0001*

 * Significant at 5% level
 C.I., 95% confidence interval.