Table 3.
Comparison of age- and sex-specific lumbar spine, right hip, and left hip BMD values between the present study and National Health and Nutritional Examination Survey (NHANES) reference data.
| Sex | Present study | NHANES (reference values) | Difference (%) | p - value | |||||
|---|---|---|---|---|---|---|---|---|---|
| Male | Age category | Sample Size | Mean (SD) g/cm2 | Mean (SD) g/cm2 | Lumbar spine | Lumbar spine | |||
| 21-30 | 58 | 0.981 (0.128) | 1.057 (0.110) | -0.076 (-7.19) | < 0.05 | ||||
| 31-40 | 215 | 0.997 (0.130) | 1.042 (0.117) | -0.045 (-4.31) | < 0.05 | ||||
| 41-50 | 414 | 0.987 (0.120) | 1.051 (0.129) | -0.064 (-6.08) | < 0.05 | ||||
| 51-60 | 1786 | 0.965 (0.124) | 1.053 (0.143) | -0.088 (-8.35) | < 0.05 | ||||
| 61-70 | 1060 | 0.971 (0.137) | 1.070 (0.142) | -0.099 (-9.25) | < 0.05 | ||||
| 71-80 | 472 | 0.959 (0.152) | 1.068 (0.177) | -0.109 (-10.20) | < 0.05 | ||||
| Female | 21-30 | 60 | 0.974 (0.130) | 1.064 (0.106) | -0.090 (-8.45) | < 0.05 | |||
| 31-40 | 254 | 0.980 (0.119) | 1.065 (0.110) | -0.085 (-7.98) | < 0.05 | ||||
| 41-50 | 702 | 0.970 (0.128) | 1.056 (0.134) | -0.086 (-8.14) | < 0.05 | ||||
| 51-60 | 2485 | 0.870 (0.137) | 0.993 (0.141) | -0.123 (-12.38) | < 0.05 | ||||
| 61-70 | 2348 | 0.806 (0.137) | 0.952 (0.142) | -0.146 (-15.33) | < 0.05 | ||||
| 71-80 | 1092 | 0.793 (0.152) | 0.902 (0.167) | -0.109 (-12.08) | < 0.05 | ||||
| Age category | Sample size | Mean (SD) g/cm2 | Mean (SD) g/cm2 | Difference (%) | p - value | ||||
| Right hip | Left Hip | Right hip | Left hip | Right hip | Left hip | ||||
| Male | 21-30 | 58 | 0.976 (0.129) | 0.966 (0.129) | 1.067 (0.120) | -0.091 (-8.52) | -0.101 (-9.46) | < 0.05 | < 0.05 |
| 31-40 | 215 | 0.976 (0.128) | 0.978 (0.129) | 1.029 (0.134) | -0.053 (-5.15) | -0.051 (-4.95) | < 0.05 | < 0.05 | |
| 41-50 | 414 | 0.978 (0.110) | 0.980 (0.114) | 1.040 (0.130) | -0.062 (-5.96) | -0.060 (-5.76) | < 0.05 | < 0.05 | |
| 51-60 | 1786 | 0.984 (0.112) | 0.981 (0.113) | 1.015 (0.142) | -0.031 (-3.05) | -0.034 (-3.34) | < 0.05 | < 0.05 | |
| 61-70 | 1060 | 0.968 (0.119) | 0.964 (0.120) | 0.997 (0.137) | -0.029 (-2.90) | -0.033 (-3.30) | < 0.05 | < 0.05 | |
| 71-80 | 472 | 0.942 (0.130) | 0.935 (0.127) | 0.961 (0.143) | -0.019 (-1.97) | -0.026 (-2.70) | < 0.05 | < 0.05 | |
| Female | 21-30 | 60 | 0.915 (0.128) | 0.913 (0.128) | 0.971 (0.114) | -0.056 (-5.76) | -0.058 (-5.97) | < 0.05 | < 0.05 |
| 31-40 | 254 | 0.919 (0.118) | 0.917 (0.116) | 0.955 (0.125) | -0.036 (-3.76) | -0.038 (-3.97) | < 0.05 | < 0.05 | |
| 41-50 | 702 | 0.948 (0.113) | 0.945 (0.113) | 0.944 (0.131) | +0.004 (0.42) | +0.001 (0.10) | > 0.05 | > 0.05 | |
| 51-60 | 2485 | 0.904 (0.119) | 0.900 (0.120) | 0.893 (0.133) | +0.011 (1.23) | +0.007 (0.783) | > 0.05 | > 0.05 | |
| 61-70 | 2348 | 0.835 (0.122) | 0.834 (0.121) | 0.852 (0.120) | -0.017 (-1.99) | -0.018 (-2.11) | < 0.05 | < 0.05 | |
| 71-80 | 1092 | 0.786 (0.121) | 0.784 (0.125) | 0.802 (0.139) | -0.016 (-1.99) | -0.018 (-2.24) | < 0.05 | < 0.05 | |