Characteristics of the study population stratified by ANN groups.

<p>The number in training group was 284 patients related to HBsAg seroclearance and 137 patients related to HBsAg seroconversion, while in testing group was 122 patients related to HBsAg seroclearance and 66 patients related to HBsAg seroconversion. *Time point 3 years. <sup>§</sup>Time point 2 years. <sup>¶</sup>Time point 3 to 2 years. Time point is defined as the period before HBsAg seroclearance: 0 year indicates date of seroclearance (baseline).</p>