Table 3. Demographic characteristics of the intention to treat population at baseline (Study 2).

Characteristic	Population	Octanediol 2 hours	Octanediol >8 hours	Malathion >12 hours	Total
Number of participants	All	175	174	171	520
	Cambridge	62	61	57	180
	Leeds	55	56	55	166
	Swansea	58	57	59	174
Age (<10)	All	49.1%	53.4%	56.1%	52.9%
	Cambridge	40.3%	54.1%	45.6%	46.7%
	Leeds	60.0%	50.0%++	67.3%	59.0%*
	Swansea	48.3%	56.1%	55.9%	53.5%
Sex (male)	All	24.0%	17.2%	20.5%	20.6%
	Cambridge	19.4%	18.0%	28.1%	21.7%
	Leeds	14.5%	16.1%	18.2%	16.3%
	Swansea	37.9%++	17.5%	15.3%	23.6%*
Family size (mean)	All	4.35	4.33	4.52	4.40
Participants per family (mean)	All	1.76	2.06	1.81	1.88
Hair length (below shoulders)	All	57.7%	63.8%	55.0%	58.8%
Hair thickness (thick)	All	36.0%	35.6%	34.5%	35.4%
Degree of curl (straight)	All	60.6%	57.5%	66.7%	61.5%
Hair type (normal)	All	84.0%	85.6%	86.6%	85.4%
Infestation (medium or heavy)	All	40.6%	45.4%	39.2%	41.7%
Days since last treatment (median)	All	55.0	52.0	60.0	56.0
Previous treatment successful	All	34.2%	31.2%	40.6%	35.4%

Key:

⁺⁺Two sided responses for 1,2-octanediol significantly greater (p<0.025) than for 0.5% malathion.

^*Significant (p<0.05) variation between groups.