Table 2. Characteristics of participants according to educational level, Copenhagen, Denmark, 1981-2001.

			Educational level, %
Variable			Low		Medium		High	P*
N			12 273		15 257		6032
BMI, kg/m2								<0.01
	< 25		46.2		53.1		62.0
	25-29		35.6		34.2		28.7
	30+		18.3		12.7		9.3
Alcohol consumption, drinks/wk								<0.01
	<1		26.3		14.9		9.9
	1-7		44.4		46.2		42.5
	7+		29.4		38.9		47.5
Physical activity,								<0.01
	Inactive		19.5		17.0		16.0
	Low		41.9		42.4		39.2
	Moderate/high		38.5		40.6		44.8
Parity								<0.01
	0		10.3		11.8		16.3
	1		15.5		17.0		15.9
	2		40.9		48.5		43.0
	3+		33.3		22.7		24.9
Age at first birtha								<0.01
	< 25 years		66.4		53.1		33.6
	25-29 years		16.7		26.6		36.0
	30+ years		4.6		7.5		13.5
	Nulliparous		12.4		12.8		16.9
Current HT useb								<0.01
	Yes		28.5		30.2		31.0

Abbreviations: BMI, body mass index; HT, hormone therapy.

“Low”= 8-11 years of basic schooling; ”Medium”= 11-14 years (upper secondary or vocational education);

”High” ≥ 15 years of education.

^* P-value (2 sided) for comparing mediators to educational levels were obtained from Pearson χ²-test.

^a Excluding participants with missing information on age at first birth, N=3475.

^b Excluding participants with missing information on HT use, N=2641.