Results
Table 1 shows that the mean ± SD participant age was 45.7±15.9 (range 18–83) years. Seventy-five percent of respondents were female, and 42 (12.1%) had been educated to elementary school level or less. In terms of marital status, 109 (32.3%) were single, while for employment status, most were employed (75.7%). Two hundred and four (62.2%) earned no more than 10,000 baht (US$300) per month, while 39.9% earned less than 5,000 baht (US$166.7). Two hundred and twenty-six (79.4%) had government-related health insurance..