Birth cohort lifetable predicted median survival estimates and 95% CIs for a Weibull model with main effects of gender and birth cohort for patients enrolled on the US Cystic Fibrosis Foundation Patient Registry surviving their first birthday
| Gender and birth cohort | Median survival estimate in years (95% CI) |
| Male births 1980–1984 | 37.8 (36.2 to 39.3) |
| Female births 1980–1984 | 31.5 (30.4 to 32.6) |
| Male births 1985–1994 | 50.9 (48.0 to 53.8) |
| Female births 1985–1994 | 42.4 (40.2 to 44.5) |