p2s {SEERaBomb}

Primary to Secondary

Description

Using a SEER data frame, this function computes times between primary and secondary cancers. In the resulting data frame, surv and status can be analyzed at the individual level, e.g. using Cox regression.

Usage

p2s(canc,firstS,secondS,yrcut=2010) 

Arguments

canc

Data frame produced by mkSEER().

firstS

Vector of names (as Strings) of first cancers you wish to consider.

secondS

Vector of names of second cancers you wish to consider.

yrcut

Only cases diagnosed in yrcut or newer are analyzed. The default of 2010 is the year AML cases after MDS began to be entered into SEER as second cancers; before they were considered to be part of the first cancer. This function facilitates studies of the rate at which myeloid neoplasms such as MDS progress to AML.

Value

Data frame with a row for each primary (first cancer) diagnosed on or after yrcut. The surv column holds the time in months to last follow up or death (status=0), or to the time of diagnosis of the second cancer (status=1).

Author(s)

Remco J. Molenaar ([e-mail] )

See Also

SEERaBomb-package, mk2D,seerSet

Examples

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