Figure 1: Annual percentage change (APC) in the age-specific incidence rates (per 100,000 persons) of detected AN (a) and BN (b) in Taiwan, 2002–2013. Multiple joinpoint models depict observed (plotted as symbols) and modeled (shown as color lines) time trends. Line of the incidence rate of the 10–14 years age group among BN cases is absent in (b) because APC is not calculated. Average annual percentage change (AAPC) values for each age group in AN and BN are also shown. *The APC and AAPC are statistically significant at an alpha of 0.05 [24]. AN, anorexia nervosa; BN, bulimia nervosa.
![Figure 1: Annual percentage change (APC) in the age-specific incidence rates (per 100,000 persons) of detected AN (a) and BN (b) in Taiwan, 2002–2013. Multiple joinpoint models depict observed (plotted as symbols) and modeled (shown as color lines) time trends. Line of the incidence rate of the 10–14 years age group among BN cases is absent in (b) because APC is not calculated. Average annual percentage change (AAPC) values for each age group in AN and BN are also shown. *The APC and AAPC are statistically significant at an alpha of 0.05 <sup>[24]</sup>. AN, anorexia nervosa; BN, bulimia nervosa.](articles/2023/37/1/images/TaiwanJPsychiatry_2023_37_1_14_372639_f1.jpg)