Table 1.

Profile table of study cohort compared to population data^†

Demographics	Sample (n=500)	Population 2006†
Age
18–25 years	20.4%	20.6%
26–35 years	24.0%	22.9%
36–45 years	23.0%	25.2%
46–55 years	21.6%	20.9%
56–65 years	11.0%	10.3%
Gender
Male	49.8%	49.5%
Female	50.2%	50.5%
Smoking status
Smoker	18.0%	12.6%*
Non-smoker	82.0%	87.4%
Occupation
Professionals, managers, executives and businessmen/women	21.7%	NA
White collar	19.4%	–
Blue collar	17.6%	–
Student/uniformed staff	24.5%	–
Others (eg, housewife, retiree)	16.8%	–
Education
At most primary	12.0%	NA
At most secondary	45.1%	–
A levels/polytechnic	27.3%	–
Degree and above	15.6%	–
Housing type
Public-built 1–4 rooms	66.6%	61.1%
Public-built >4 rooms	16.6%	21.7%
Private-built	16.8%	17.2%

^*National Health Survey 2004 for Singaporeans and Permanent Residents aged 18–69 years old.

^†As calculated by independent research agency (Research plus).