Table 1: Demographic data on participants.

VariableCategoryInitial survey 2008 ( )Follow-up survey 2012 ( )

GenderMale 15%14%
Female85%86%

Age (years)Mean4241
Median4543
Range(24–59)(21–60)
Standard deviation1012

Age group≤2916%29%
30–3923%14%
40–4937%23%
50–5924%32%
≥602%

Occupational statusNurse65%62%
Practical nurse25%28%
Social worker4%
Doctor6%2%
Others 8%

Occupation timeMean1616
Median1515
Range(0.5–37)(0.3–40)
Standard deviation1112

EmploymentPermanent71%76%
Temporary29%24%