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1.12

• corrected the frailty variance for the MIG and MBS models

1.11

• corrected the observed log-likelihood function for the MIG model
• option MBS (mixture of Birnbaum-Saunders) was added in frailty.fit function

1.10

• corrected the variance of frailty for the MIG model and its estimated standard error

1.9

• option MIG (mixture of inverse gaussian) was added in frailty.fit function

1.8

• removed dependency of frailtypack package

1.7

• option TN (truncated normal) was added in frailty.fit function

1.6

• fixed bugs in summary.extrafrail function to compute p-values

1.5

• option exp (exponential) was added in frailty.fit function as baseline model
• fixed bugs in summary.extrafrail function for pe distribution as baseline model

1.4

• option pe (piecewise exponential) was added in frailty.fit function as baseline model

1.3

• option BS (Birnbaum-Saunders) was added in frailty.fit function

1.2

• fixed bugs in summary.extrafrail function

1.1

• function frailtyWL was deprecated
• function frailty.fit was included. Besides the shared weighted Lindley frailty model, this function allows to perform estimation for the shared gamma and shared inverse gaussian frailty models.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.