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Use conditional_after times for predict_expectation methods

Status: Open.

#1695 In camdavidsonpilon/lifelines;

· TeyAll opened on Jul 2, 2026

survival_table_from_events / KaplanMeierFitter accepting negative durations

Status: Open.

#1693 In camdavidsonpilon/lifelines;

· Qayad-Ali opened on Jun 30, 2026

Pandas 3.0 support

Status: Open.

#1685 In camdavidsonpilon/lifelines;

· huntermills707 opened on Jun 15, 2026

restricted_mean_survival_time(..., return_variance=True) returns variance of the truncated RV, not the sampling variance — silently produces wrong p-values

Status: Open.

#1682 In camdavidsonpilon/lifelines;

· sebasj13 opened on May 6, 2026

weightings=“fleming-harrington” cant handle zero values

Status: Open.

#1681 In camdavidsonpilon/lifelines;

· jorflima opened on May 5, 2026

Use conditional_after times for predict_expectation of WeibullAFTFitter

Status: Open.

#1680 In camdavidsonpilon/lifelines;

· TeyBerendschot opened on Mar 20, 2026

Episode censoring length creates different hazard estimates in CoxPHFitter

Status: Open.

#1679 In camdavidsonpilon/lifelines;

· gsroma opened on Mar 18, 2026

Actuarial life-table analysis - any interest in flip-side of survival?

Status: Open.

#1678 In camdavidsonpilon/lifelines;

· dowes48 opened on Mar 16, 2026

Weights create odd behavior with CoxTimeVaryingFitter()

Status: Open.

#1673 In camdavidsonpilon/lifelines;

· zer2 opened on Mar 3, 2026

add_at_risk_counts is not working properly with limited max X on plot axis

Status: Open.

#1667 In camdavidsonpilon/lifelines;

· Ventangelo opened on Nov 8, 2025

Survival prediction from time-varying covariates using PiecwiseExponentialRegressionFitter/CoxTimeVarying

Status: Open.

#1666 In camdavidsonpilon/lifelines;

· knwyne20 opened on Aug 28, 2025

Restricted cubic spline (RCS) visualization issue in lifelines

Status: Open.

#1664 In camdavidsonpilon/lifelines;

· kcw0331 opened on Aug 26, 2025