data from Section 1.12

Description

The std data frame has 877 rows and 3 columns.

Format

This data frame contains the following columns:

obs

Observation number

race

Race (W=white, B=black)

marital

Marital status (D=divorced / separated, M=married, S=single)

age

AGE

yschool

Years of schooling

iinfct

Initial infection (1= gonorrhea, 2=chlamydia, 3=both)

npartner

Number of partners

os12m

Oral sex within 12 months (1=yes, 0=no)

os30d

Oral sex within 30 days (1=yes, 0=no)

rs12m

Rectal sex within 12 months (1=yes, 0=no)

rs30d

Rectal sex within 30 days (1=yes, 0=no)

abdpain

Presence of abdominal pain (1=yes, 0=no)

discharge

Sign of discharge (1=yes, 0=no)

dysuria

Sign of dysuria (1=yes, 0=no)

condom

Condom use (1=always, 2=sometime, 3=never)

itch

Sign of itch (1=yes, 0=no)

lesion

Sign of lesion (1=yes, 0=no)

rash

Sign of rash (1=yes, 0=no)

lymph

Sign of lymph (1=yes, 0=no)

vagina

Involvement vagina at exam (1=yes, 0=no)

dchexam

Discharge at exam (1=yes, 0=no)

abnode

Abnormal node at exam (1=yes, 0=no)

rinfct

Reinfection (1=yes, 0=no)

time

Time to reinfection

Source

Klein and Moeschberger (1997) Survival Analysis Techniques for Censored and truncated data, Springer.

Examples

data(std)