std: 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.