“…Thus, a diagnosis of GAD was made if a respondent reported [1] excessive anxiety and worry, occurring more days than not for 3 months about a number of events or activities; [2] difficulty in controlling the worry; [3] three or more of the six DSM-IV symptoms of GAD in the same 3-month period; and [4] significant distress (extremely or very distressed) or impairment (extremely or very impaired) brought about by anxiety symptoms. Such a telephone-based assessment of GAD had been used in previous community studies (Lee, Ma, Tsang, & Kwok, 2009) and was found to be conservatively concordant with the clinical diagnosis of GAD made by psychiatrists using the SCID (First et al, 2002;Lee, Tsang, Lau, et al, 2008).…”