Supplementary Figure S1. Switchers: SALT trajectories from baseline to end of JAK1 and JAK2.

Patient-level trajectories (gray lines) and group means (colored with 95% CIs) for switchers, stratified by reason for switching (insurance vs efficacy). Points represent baseline, end of 1stJAK inhibitor and end of 2nd JAK inhibitor; lower SALT indicates less hair loss.针对换药患者，按换药原因（保险相关原因与疗效相关原因）进行分层，其个体水平轨迹以灰色线条呈现，组均值及对应的95%置信区间（95% Confidence Intervals，CIs）以彩色展示。图中数据点分别代表基线状态、首次JAK抑制剂（JAK inhibitor）治疗结束节点与第二次JAK抑制剂治疗结束节点；SALT评分（SALT）越低，脱发程度越轻。