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Table 4 Agreement statistics between percentage occurrence of necrophagous fly species in human corpses in Tamil Nadu (2011–2018) and historical occurrence in India (1985–2018)

From: Occurrence of necrophagous flies of forensic importance in medico-legal cases in Tamil Nadu State, India

Necrophagous fly species

% Occurrence in Tamil Nadu State (2011–2018) –present study

[A]

% Historical occurrence in India (1985–2018)

[B]

Agreement statistics between [A] and [B]

Chrysomya megacephala

70.8

21.9

Kappa = 0.273 ± 0.051a

Fair agreement between the % occurrence between [A] and [B]

Chrysomya rufifacies

12.5

21.9

Sarcophaga spp

12.5

21.9

bMusca spp

4.2

0

  1. aStandard error of kappa value
  2. bNot included in the kappa statistics as not reported in the historical distribution data
  3. The inter-rater agreement between the occurrence of necrophagous fly species in Tamil Nadu (2011–2018) and historical occurrence in India (1985–2018) is 75%. Out of 4 necrophagous fly species reported in the present study, 3 fly species were reported in historical distribution data