BAI consists of 21 anxiety symptoms,with respondents being asked to indicate the extent to which they were bothered by each item “during the past week, including today”. Responses are scored on a 0—3 scale ranging from “not at all” to “severely”, giving a score range of 0—63. As a recommended scoring and interpretation system for the BAI, 10—18 points are classified as mild-moderate anxiety, 19—29 points as moderate-severe, and 30—63 points as severe anxiety.