. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2009 Apr 21;18(5):1379–1385. doi: 10.1158/1055-9965.EPI-08-1210

Table 4.

Distribution of age, Gail risk score, and body mass index for each of the three highest accruing study sites

Variable	Study site	Median	Minimum	Maximum	P^*
Age, y	Duke (n = 34)	44.50	36.00	55.00
	OSU (n = 21)	47.00	38.00	53.00
	RPCI (n = 6)	43.50	38.00	48.00
	Overall (n = 61)	45.00	36.00	55.00	0.0258
Gail score	Duke (n = 34)	2.15	0.90	12.90
	OSU (n = 21)	2.70	0.60	10.40
	RPCI (n = 6)	2.30	0.80	3.40
	Overall (n = 61)	2.30	0.60	12.90	<0.0001
Body mass index, kg/m²	Duke (n = 34)	22.70	17.90	31.50
	OSU (n = 21)	28.69	20.96	36.03
	RPCI (n = 6)	29.25	22.60	36.30
	Overall (n = 61)	23.90	17.90	36.30	0.0054

ANOVA, P < 0.05 is considered statistically significant.