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Table 4 Cumulative hazard functions (logarithmic scale) for the example data

From: Statistics review 12: Survival analysis

Survival time (days): t

Cumulative survival: S(t)

Cumulative hazard: H(t) = -ln S(t)

Treatment 1

  

8

0.8571

0.1542

12

0.7143

0.3365

15

0.7143

0.3365

25

0.7143

0.3365

37

0.4762

0.7419

55

0.2381

1.4351

72

0.2381

1.4351

Treatment 2

  

1

  

1

0.7500

0.2877

4

0.6250

0.4700

5

0.5000

0.6931

6

0.5000

0.6931

9

0.5000

0.6931

9

0.3333

1.0986

22

0.0000