Table 3.

Parameter Estimates (95% CI) From the Probit Survival Models. A Positive Coefficient Means that an Increase in the Predictor Leads to an Increase in the Predicted Probability of Survival

	Joint model	No %FEV1	Baseline %FEV1	Time-varying %FEV1
Intercept	1.6 (1.5, 1.7)	2.4 (2.3, 2.4)	1.3 (1.1, 1.4)	0.37 (0.23, 0.50)
%FEV1 (per 10 units)	0.28 (0.26, 0.29)		0.18 (0.17, 0.19)	0.32 (0.31, 0.33)
%FEV1 slope	0.45 (0.43, 0.48)
Age-5 (per 10 yrs)	−0.042 (−−0.059, −0.026)	−0.046 (−0.089, −0.002)	−0.12 (−0.17, −0.08)	0.059 (0.007, 0.111)
Birth year (per 10 yrs)	0.26 (0.22, 0.30)	0.16 (0.12, 0.21)	−0.073 (−0.120, −0.025)	0.039 (−0.011,0.090)
Male	0.092 (0.062, 0.122)	0.15 (0.10, 0.19)	0.13 (0.09, 0.18)	0.14 (0.09, 0.19)
F508 alleles: 2 vs 0, 1 or not typed	0.14 (0.03, 0.25)	−0.13 (−0.17, −0.09)	−0.10 (−0.14, −0.06)	−0.042 (−0.089, 0.006)

%FEV1 indicates percent forced expiratory volume.