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Table 1 Characteristics of study subjects

From: Effect of urbanization on bone mineral density: A Thai epidemiological study

 

Urban (Bangkok)

Rural (Khon Kean)

Mean Difference (95% CI)

P value

Men

    

Number of Subjects

159

181

  

Age (years)

49.6 ± 17.5

49.1 ± 17.1

0.5 (-3.2, 4.2)

0.800

Body weight (kg)

64.3 ± 11.1

58.2 ± 8.8

6.1 (3.0, 8.1)

<0.001

Height (cm)

165.5 ± 6.3

161.2 ± 5.9

4.3 (3.0, 5.6)

<0.001

Body Mass Index (kg/m2)

23.4 ± 3.6

22.4 ± 2.8

1.0 (0.3, 1.7)

0.003

Bone Mineral Density (g/cm2)

    

   Femoral neck

0.87 ± 0.16

0.96 ± 0.18

-0.09 (-0.13, 0.05)

<0.001

   Lumbar spine

1.12 ± 0.17

1.11 ± 0.16

0.01 (-0.03, 0.04)

0.64

Women

    

Number of Subjects

252

255

  

Age (years)

50.4 ± 15.1

50.6 ± 15.9

-0.2 (-2.9, 2.4)

0.853

Body weight (kg)

55.5 ± 8.9

55.9 ± 10.5

-0.4 (-2.0, 1.4)

0.718

Height (cm)

154.7 ± 5.4

152.1 ± 5.2

2.6 (1.6, 3.5)

<0.001

Body Mass Index (kg/m2)

23.2 ± 3.8

24.1 ± 4.0

-0.9 (-1.5, -0.1)

0.017

Bone Mineral Density (g/cm2)

    

   Femoral neck

0.79 ± 0.13

0.87 ± 0.19

-0.08 (-0.11, -0.05)

<0.001

   Lumbar spine

1.05 ± 0.18

1.01 ± 0.21

0.04 (-0.11, 0.08)

0.16

  1. All values are shown in mean ± standard deviation (SD).