Figure 1. General demographic determinants of leukocyte telomere length at timepoint 1 (n=85) and at timepoint 2 (n=168) in CF patients. (A) and (C) Pearson correlation of LTL with age at TP1 and TP2, respectively. (B) and (D) Sex differences in LTL at TP1 and TP2, respectively. (E) Pearson correlation of LTL at TP1 and TP2, representing LTL tracking over time. (F) Decline in LTL for 85 participants from TP1 to TP2. Abbreviations: TP1: timepoint 1; TP2: timepoint 2; LTL: leukocyte telomere length.