Province	Subjects (n)	Normal		Osteopenia		Osteoporosis		T value
Province	Subjects (n)	n	%	n	%	n	%	T value
Sichuan	113	89	0.79	22	0.19	2	0.02	−0.35 ± 0.94
Tibet	131	102	0.78	25	0.19	4	0.03	−0.08 ± 1.26
Yunnan	67	35	0.52	29	0.43	3	0.04	−0.92 ± 1.03
Hainan	80	54	0.68	25	0.31	1	0.01	−0.48 ± 0.98
Heilongjiang	98	65	0.66	31	0.32	2	0.02	−0.46 ± 1.07
Inner Mongolia	55	38	0.69	17	0.31	0	0.00	−0.36 ± 0.99
Xinjiang	71	50	0.70	19	0.27	2	0.03	−0.46 ± 1.11
Qinghai	70	53	0.76	17	0.24	0	0.00	−0.52 ± 0.87
Sum	685	486	0.71	185	0.27	14	0.02	−0.42 ± 1.07