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Table 2 BMD characteristics of urban and rural female participants

From: Differences in the prevalence and risk factors of osteoporosis in chinese urban and rural regions: a cross-sectional study

Variables

Urban (n = 773)

P

Rural (n = 767)

P

Postmenopausal (n = 476)

Premenopausal (n = 297)

Postmenopausal (n = 470)

Premenopausal (n = 297)

BMI (kg/m2), mean (S.E)

25.38 (0.25)

23.13 (0.32)

 < 0.001

25.05 (0.23)

23.22 (0.30)

 < 0.001

BMI (kg/m2), n (%)

  

 < 0.001

  

 < 0.001

Underweight (< 18.5)

6 (1.04)

6 (4.54)

 

8 (2.15)

16 (8.37)

 

Normal (18.5–23.9)

161 (34.77)

163 (61.85)

 

173 (36.92)

145 (54.24)

 

Overweight (≥ 24.0)

309 (64.19)

128 (33.61)

 

289 (60.93)

137 (37.39)

 

Osteoporosis, n (%)

  

 < 0.001

  

 < 0.001

No

340 (73.17)

285 (97.89)

 

322 (67.47)

263 (93.23)

 

Yes

136 (26.83)

12 (2.11)

 

148 (32.53)

34 (6.77)

 

Low BMD, n (%)

  

 < 0.001

  

 < 0.001

No

245 (52.98)

226 (79.92)

 

229 (47.17)

201 (70.39)

 

Yes

231 (47.02)

71 (20.08)

 

241 (52.83)

96 (29.61)

 

Lumbar spine L1 (g/cm2), mean (S.E)

0.81 (0.01)

1.00 (0.01)

 < 0.001

0.74 (0.01)

0.92 (0.01)

 < 0.001

Lumbar spine L2 (g/cm2), mean (S.E)

0.86 (0.01)

1.07 (0.01)

 < .001

0.81 (0.01)

1.02 (0.01)

 < 0.001

Lumbar spine L3 (g/cm2), mean (S.E)

0.94 (0.01)

1.15 (0.01)

 < 0.001

0.87 (0.01)

1.09 (0.01)

 < 0.001

Lumbar spine L4 (g/cm2), mean (S.E)

0.95 (0.01)

1.12 (0.01)

 < 0.001

0.91 (0.01)

1.09 (0.01)

 < 0.001

Greater trochanter (g/cm2), mean (S.E)

0.57 (0.01)

0.63 (0.01)

 < 0.001

0.53 (0.01)

0.62 (0.01)

 < 0.001

Total hip (g/cm2), mean (S.E)

0.79 (0.01)

0.89 (0.01)

 < 0.001

0.75 (0.01)

0.88 (0.01)

 < 0.001

  1. BMI body mass index, BMD bone mineral density