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Table 4 ANOVA table giving results of a comparison of larval abundance before and after termination of interventions within habitats in Fort Ternan and Lunyerere

From: Integrated mosquito larval source management reduces larval numbers in two highland villages in western Kenya

Site

Intervention

Variable

Anopheles early

Anopheles late

Culex early

Culex late

Fort Ternan

None

F

5.329

0.364

0.010

1.197

P

< 0.05

> 0.05

> 0.05

> 0.05

Bti

F

3.752

a

180.435

60.559

 

P

= 0.055

a

< 0.05

< 0.05

Fish

F

1.322

a

2.392

1.116

 

P

> 0.05

a

> 0.05

> 0.05

Drainage

F

0.271

a

0.767

0.241

 

P

> 0.05

a

> 0.05

> 0.05

Lunyerere

None

F

2.870

13.334

1.887

2.676

  

P

> 0.05

< 0.05

> 0.05

> 0.05

 

Bti

F

14.436

11.066

8.384

8.867

  

P

< 0.05

< 0.05

> 0.05

> 0.05

 

Drainage

F

10.847

6.426

15.220

15.658

  

P

< 0.05

< 0.05

< 0.05

< 0.05

 

Arrow roots

F

a

a

a

a

  

P

a

a

a

a

  1. Note: a = no variance between the before and after group hence statistics was not computed.
  2. P = 95 % significance level.
  3. Degrees of freedom (df) =1 in all cases.