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scipy-yli
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Update yli.turnbull for the case where no data are right-censored

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RunasSudo 2023-12-31 18:34:19 +11:00
parent 00ed38d47d
commit 035b1592dc
Signed by: RunasSudo
GPG Key ID: 7234E476BF21C61A
1 changed files with 8 additions and 0 deletions
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yli/survival.py
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@ -272,6 +272,9 @@ def calc_survfunc_turnbull(time_left, time_right, *, ci=True, step_loc=0.5, maxi
xpoints = [i[0]*(1-step_loc) + i[1]*step_loc for i in raw_result['failure_intervals'] if i[1]]
ypoints = survival_prob
if raw_result['failure_intervals'][-1][1]:
# No right-censored observations - we can draw the whole survival curve
ypoints = np.concatenate([ypoints, [0]])
# Draw straight lines
# np.concatenate(...) to force starting drawing from time 0, survival 100%
@ -296,6 +299,11 @@ def calc_survfunc_turnbull(time_left, time_right, *, ci=True, step_loc=0.5, maxi
ci0 = survival_prob_ci.T[0]
ci1 = survival_prob_ci.T[1]
if raw_result['failure_intervals'][-1][1]:
# No right-censored observations - we can draw the whole survival curve
ci0 = np.concatenate([ci0, [0]])
ci1 = np.concatenate([ci1, [0]])
# Plot confidence intervals
ypoints0 = np.concatenate([[1], ci0]).repeat(2)[:-1]
ypoints1 = np.concatenate([[1], ci1]).repeat(2)[:-1]