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Table 1 Subject demographics (%)

From: An ex vivo, assessor blind, randomised, parallel group, comparative efficacy trial of the ovicidal activity of three pediculicides after a single application - melaleuca oil and lavender oil, eucalyptus oil and lemon tea tree oil, and a "suffocation" pediculicide

Parameter Value EO/LTTO (n = 30) "Suffocation"
pediculicide (n = 31)
TTO/LO) (n = 31) Overall (n = 92) p
Gendera Female 22 (73.3) 19 (61.3) 22 (71.0) 63 (68.5) 0.5603
  Male 8 (26.7) 12 (38.7) 9 (29.0) 29 (31.5)  
School Codea C 11 (36.7) 11 (35.5) 12 (38.7) 34 (37.0) 0.9811
  D 13 (43.3) 13 (41.9) 14 (45.2) 40 (43.5)  
  RE 6 (20.0) 7 (22.6) 5 (16.1) 18 (19.6)  
Gradeb Prep 6 (20.0) 5 (16.1) 8 (25.8) 19 (20.7) 0.8170
  1 10 (33.3) 9 (29.0) 8 (25.8) 27 (29.3)  
  2 1 (3.3) 1 (3.2) 0 (0.0) 2 (2.2)  
  3 4 (13.3) 3 (9.7) 7 (22.6) 14 (15.2)  
  4 4 (13.3) 5 (16.1) 1 (3.2) 10 (10.9)  
  5 2 (6.7) 3 (9.7) 5 (16.1) 10 (10.9)  
  6 2 (6.7) 3 (9.7) 1 (3.2) 6 (6.5)  
  7 1 (3.3) 2 (6.5) 1 (3.2) 4 (4.3)  
Hair Colourb Black 7 (23.3) 16 (51.6) 6 (19.4) 29 (31.5) 0.0308
  Blonde 8 (26.7) 7 (22.6) 12 (38.7) 27 (29.3)  
  Brown 14 (46.7) 6 (19.4) 13 (41.9) 33 (35.9)  
  Red 1 (3.3) 2 (6.5) 0 (0.0) 3 (3.3)  
Hair Lengthc (cm) n 30 31 31 92 0.8047
  Mean 28.9 28.8 31.4 29.7  
  SD 15.76 19.63 16.89 17.37  
  Min 3 2 3 2  
  Median 32.0 30.0 33.0 32.0  
  Max 53 59 60 60  
Hair Typeb Curly 2 (6.7) 2 (6.5) 1 (3.2) 5 (5.4) 0.8860
  Straight 24 (80.0) 23 (74.2) 23 (74.2) 70 (76.1)  
  Wavy 4 (13.3) 6 (19.4) 7 (22.6) 17 (18.5)  
  1. a: Probability calculated by Pearson's chi-square test; b: Probability calculated by Fisher's Exact test; c: Probability calculated by analysis of variance.