Table 3.

Unadjusted and adjusted OR of osteoporosis^† among postmenopausal American-Indian women

	Osteoporosis status
Predictor variables	Unadjusted OR	Adjusted OR	Adjusted OR	Adjusted OR	Adjusted OR
Soda	0·88	0·98	0·91	1·00	1·01
Age (years)		1·09**		1·08**	1·08**
BMI (kg/m2)			0·88**	0·88**	0·88**
Physical activity‡					1·00
Hormones (past)					0·30*
Hormones (current)					0·71
Smoking (past)					0·97
Smoking (current)					1·10

^*P< 0·05,

^**P< 0·0001.

^†Osteoporosis status was defined using calcaneal bone mineral density (BMD, g/cm²) T scores; osteoporosis for BMD ≤ −2·5 and nonosteoporosis (normal and osteopenia combined) for BMD > −2·5.

^‡The physical activity variable represents total leisure-time physical activity (min/week).