“…The increase is more likely to be largely attributable to an increase in the proportion of cases registered, which may be in turn attributable to a better service of the related agencies, lower discrimination against the patients, higher awareness of the disorder, more willingness of the guardians to register, etc. (Lai, Tseng, & Guo, 2011;Lai, Tseng, Hou, & Guo, 2012a, 2012b. For example, some researchers argued that in an area where the quantity and quality of service are high, the administrative prevalence is likely to approach the ''true prevalence'' (Yeargin-Allsopp, Murphy, Oakley, & Sikes, 1992), and the quantity and quality of service had improved during the studies period in Taiwan.…”