bladder: Bladder tumor recurrence data.

In mhazard: Nonparametric and Semiparametric Methods for Multivariate Failure Time Data

Bladder tumor recurrence data.

Description

Data from a randomized trial of patient recurrences of superficial bladder tumor recurrence as conducted by the Veterans Administration Cooperative Urological Group. These data were used to compare the frequency of recurrences among 48 patients assigned to placebo, among whom there were a total of 87 post-randomization recurrences, and 38 patients assigned to treatment with a drug called thiotepa, among whom there were 45 recurrences during the follow-up period, which averaged about 31 months.

Usage

data(bladder)

Format

A data frame with 86 rows and 13 variables:

Group:

Placebo vs treatment (thiotepa).

Number:

Number of tumors present at baseline, with 8 denoting 8 or more.

Size:

Size of largest tumor at baseline, in centimeters.

CensorTime:

Censor time, in months.

T1:

For i = 1,...,9, T_i is the recurrence time, in months. If there is no recurrence, T_1, ..., T_9 will be NA. If there is only one, T_1 will be filled and T_2, ..., T_9 will be NA, and so on.

T2:

See T1.

T3:

See T1.

T4:

See T1.

T5:

See T1.

T6:

See T1.

T7:

See T1.

T8:

See T1.

T9:

See T1.

Source

Table 1.2, page 18 of Prentice and Zhao 2019, taken from Table 9.2 on page 292 in The Statistical Analysis of Failure Time Data, Second Edition, by J. D. Kalbfleisch and R. L. Prentice. New York: Wiley and Sons, 2002.

References

Prentice, R., Zhao, S. "The statistical analysis of multivariate failure time data: A marginal modeling approach", CRC Press (2019).

mhazard documentation built on Aug. 17, 2023, 5:12 p.m.