Table 4.

Clinical features of the different CYP1B1 Val432Leu genotypes in the American population

Clinical features	VAL/VAL N=42	VAL/LEU N=113	LEU/LEU N=61	*P
Age	61.0±1.24	63.1±0.76	65.9±1.03	0.02
BMI	29.4±0.85	27.6±0.52	28.2±0.71	0.2
YSM	12.0±1.7	13.5±1.1	16.3±1.4	0.1
Positive family history of osteoporosis	53.6%	47.7%	48.3%	0.80
History of smoking
Percent past smokers	50%	39.%%	43.3%	0.51
Total past smoking (pack-years)	5.75±2.7	7.6±1.6	12.3±2.2
Calcium intake	1066.6±99.5	1138.4±60.3	1215.6±84.1	0.1
Alcohol intake (oz-Eq/wk)	1.32±0.40	1.24±0.24	1.38±0.34	0.92
Activity score	2.2±0.10	2.3±0.06	2.1±0.08	0.38

^*P by ANOVA for continuous variables and χ2 for categorical variables.