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. 2016 Oct 1;10(10):ZC67–ZC71. doi: 10.7860/JCDR/2016/21410.8653

[Table/Fig-9]:

Table showing comparison of different dyes for the development of latent lip prints.

Comparison χ2 p-value
Sudan III Invisible vs. Indigo Invisible 15.903 0.001*
Sudan III Invisible vs. Aluminium Powder Invisible 9.130 0.010*
Indigo Invisible vs. Aluminium Powder Invisible 14.129 <0.001*

The statistical test applied is using chi square test

*denotes significant association between the two dye: p values highly significant