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Logo of bmcdermBioMed Centralsearchsubmit a manuscriptregisterthis articleBMC Dermatology
 
From:
Published online 2010 August 20. doi: 10.1186/1471-5945-10-6

Table 2

Louse-free Rate the Day After Final Treatment (PP population)

P-value
Number Louse-freeLouse-free PercentageUnadjustedAdjusted*

Louse-free rate:
Tea Tree/Lavender Oil product versus
Pyrethrins/piperonyl butoxide product
Tea Tree/Lavender Oil product40 out of 4197.56< 0.0001*

Pyrethrins/piperonyl butoxide product10 out of 3033.33

Louse-free rate:
Suffocation product
versus
Pyrethrins/piperonyl butoxide product
Suffocation product37 out of 37100< 0.0001*

Pyrethrins/piperonyl butoxide product10 out of 3033.33

*The adjusted p-values could not be calculated because the generalized Hessian matrix was not positive definitive (the off-diagonal elements are too few)