Table 1

Demographics of the study population

FrequencyPercentMean age (SD)
Total787 446100.043.9 (0.03)
Sex
 Female400 96550.945.3 (0.04)
 Male386 48149.142.2 (0.04)
Ethnicity
 Chinese537 23468.247.1 (0.03)
 Malay127 50116.235.1 (0.06)
 Indian78 45210.039.7 (0.08)
 Others44 2595.637.1 (0.09)
Age groups
 0–24201 83925.6
 25–44165 21221.0
 45–64252 20632.0
 65–99168 18921.4