Background
For long-term health care, there was no record on this issue. Such reports suggested that most Thai people still used primary health care. Thus it was reasonable to focus on the people depending on primary health care in order to prevent them from requiring a higher health care. As a matter of fact, everyone could have health problems in his life. When health problems were inevitable, it was better to prevent than to cure them (WHO, 1995). Consequently, attempts to prevent illness or promote health were desirable