Table 2 Two by two contingency analysis of mortality rates provided in Table 1. Probabilities > 0.05 are highlighted in bold

Colombo: permethrin

Gampaha: permethrin

2.20E-16

Galle: permethrin

2.20E-16

6.61E-05

Colombo: deltamethrin

1.24E-06

8.85E-01

2.10E-04

Gampaha: deltamethrin

6.79E-08

4.72E-01

1.68E-03

6.68E-01

Galle: deltamethrin

2.20E-16

2.01E-09

5.40E-02

1.06E-08

2.34E-07