Table 4.

Socioeconomic status and sexual behaviour (intervention group only)

	Females				Males
	%	n	OR (95% CI)	Sig.	%	n	OR (95% CI)	Sig.
Has had penetrative sex
Deprived pupils 2007	44.8	259	1.00		38.5	109	1.00
Affluent pupils 2007	38.6	105	0.78 (0.49 to 1.23)	n.s.	31.2	231	0.72 (0.45 to 1.16)	n.s.
Deprived pupils 2008/2009	47.7	438	1.00		42.3	182	1.00
Affluent pupils 2008/2009	37.9	195	0.66 (0.47 to 0.94)	p<0.05	38.5	109	0.72 (0.50 to 1.03)	n.s.
Socio-economic status time interaction	–	997	0.85 (0.47 to 1.62)	n.s.	–		1.16 (0.62 to 2.17)	n.s.
Condom use at all/most instances of sex
Deprived pupils 2007	69.1	94	1.00		65.7	35	1.00
Affluent pupils 2007	69.8	43	1.01 (0.86 to 1.19)	n.s.	65.6	64	1.00 (0.42 to 2.38)	n.s.
Deprived pupils 2008/2009	62.7	83	1.00		70.6	68	1.00
Affluent pupils 2008/2009	75.2	157	1.89 (1.04 to 3.45)	p<0.05	72.3	155	0.72 (0.50 to 1.02)	n.s.
Socioeconomic status time interaction	–	377	2.17 (0.76 to 6.17)	n.s.	–	322	0.85 (0.27 to 2.66)	n.s.