| CF | Cystic Fibrosis |
| CFTR | CF Transmembrane conductance Regulator |
| CwCF | Children with Cystic Fibrosis |
| DPL | DEKAs Plus Liquid |
| ECFS | European Cystic Fibrosis Society |
| ETI | Fixed combination of Elexacaftor, Tezacaftor and Ivacaftor |
| F | Female |
| FE-1 | Fecal elastase-1 |
| FSV | Fat-Soluble Vitamins |
| IQR | Inter Quartile Range |
| IU | International Unit(s) |
| M | Male |
| M0 | Baseline, Month 0 |
| M12 | Month 12 after baseline |