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Table 4 Comparison of the two ultrasound comb-treated groups for the presence of lice, presence of louse egg/nits, and mean numbers of lice and louse eggs/nits recovered

From: Neem-silicone lotion and ultrasound nit comb: a randomised, controlled clinical trial treating head louse infestation

Endpoint Treatment Day of study
Lotion 0 2 6 7 9 14
Presence of live lice NNC 94.1% 35.3% 41.2% 32.7% 11.8% 17.7%
ONC 85.7% 64.3% 71.4% 21.2% 50.0% 71.4%*
Total lice NNC 20.9 2.12 2.06 0.90 0.12 0.35
ONC 28.4 4.93 11.86 0.42 1.79** 5.93
Adult males NNC 1.69 0.53 0.06 0.38 0.0 0.06
ONC 2.25 0.29 0.79 0.33 0.07 0.86
Adult females NNC 2.69 0.65 0.18 0.06 0.0 0.18
ONC 3.50 0.86 1.21 0.75 0.14 1.79
Stage 3 nymphs NNC 3.31 0.59 0.18 0.13 0.0 0.12
ONC 3.33 0.29 1.71** 1.67 0.29 1.00**
Stage 2 nymphs NNC 6.00 0.18 0.59 1.81 0.06 0.0
ONC 4.33 1.14 3.07** 6.17 1.00 1.21
Stage 1 nymphs NNC 7.25 0.18 1.06 5.94 0.06 0.0
ONC 13.7 2.36 5.07*** 12.8 0.29 1.07
Presence of eggs/nits NNC 94.1% 82.4%
ONC 71.4% 78.6%
Number of eggs/nits NNC 13.25 19.80
ONC 181.83 124.20
  1. Mean figures should only be taken as indicative due to the skew distribution of the data
  2. Day 0 and Day 7 treatment days, Days 2, 6, 9, and 14 assessment days only
  3. ***Significant difference at p < 0.005, **significant difference at p < 0.05, *near significant difference at p = 0.05