Table 1.

Proportion of women with different background characteristics among recruited and non-recruited women in blind and non-blind trial arms, EPHT Trial

Background characteristics	Blind (n = 2083)			Non-blind (n = 2087)
	Recruited (n = 777)	Non- recruited (n = 1306)	p-value	Recruited (n = 1001)	Non-recruited (n = 1086)	p-value
Age > 64 yrs	5.5%	9.3%	0.002	6.8%	10.1%	0.008
University education	31.8%	29.5%	0.28	33.5%	25.1%	< 0.0001
Recruited in the university clinic (living in Tartu or Tartu county)	33.3%	27.2%	0.003	29.8%	29.2%	0.77
Current smoker	15.2%	16.7%	0.39	14.7%	20.1%	0.002
> 10 yrs since menopause	28.6%	32.7%	0.06	27.9%	34.7%	0.001