The National Health Survey examines the prevalence of noncommunicable diseases and cardiovascular risk factors in Singapore. Compared to 1998, there were overall decreases in diabetes, high blood pressure, high cholesterol, and cigarette smoking (for adults 18-69 years old). The 2004 survey also found slight increases in alcohol consumption and obesity, and a sizable increase in physical activity among participants. In addition, the survey measured the prevalence and awareness of cancer screenings (breast, colon, and cervical cancer) in Singaporeans. The survey targeted the country's three major ethnic groups (Chinese, Malays and Indians). It compiled responses from 4,168 people at six different clinics, out of 7,275 eligible respondents.