Table 1.
Characteristics of the subjects
| Variable | Men (n=283) |
Women (n=362) |
Overall (n=645) |
|||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Age (years) | 63.4 | 7.4 | 61.7 | 7.5 | 62.4 | 7.5 |
| Weight (kg) | 71.1 | 12.3 | 60.4 | 11.3 | 65.1 | 12.9 |
| Height (cm) | 165.9 | 7.2 | 153.7 | 5.6 | 159.0 | 8.8 |
| BMI (kg/m2) | 26.0 | 4.2 | 25.6 | 4.7 | 25.7 | 4.5 |
| Calcaneal SOS (m/s) | 1,545.3 | 34.0 | 1,535.8 | 28.8 | 1,540.0 | 31.5 |
| Calcaneal broadband attenuation of sound (dB MHz) | 119.4 | 11.0 | 112.4 | 11.9 | 115.5 | 12.0 |
| Calcaneal SI | 91.9 | 16.1 | 84.8 | 14.8 | 87.9 | 15.8 |
| T-score | −1.0 | 1.3 | −0.7 | 1.5 | −0.8 | 1.4 |
| OSTA | 1.4 | 2.8 | −0.3 | 2.6 | 0.5 | 2.8 |
| Ethnicity | n | % | n | % | n | % |
| Chinese | 140 | 49.5 | 208 | 57.5 | 348 | 54.0 |
| Malay | 110 | 38.9 | 124 | 34.3 | 234 | 36.3 |
| Indian | 33 | 11.7 | 30 | 8.3 | 63 | 9.8 |
Abbreviations: BMI, body mass index; OSTA, osteoporosis self-assessment tool for Asians; SI, stiffness index; SOS, speed of sound.