Cross-sectional average trajectories of BG (solid lines) in different FHS and FHSO exams: a) males, FHS exams: 20-21, FHSO exam: 4; b) females, FHS exams: 20-21, FHSO exam: 4; c) males, FHS exams: 22-23, FHSO exam: 5; d) females, FHS exams: 22-23, FHSO exam: 5. Respective values for individuals from different age groups in the subsequent exams are shown by the dashed lines