Table 1

Simple macro variables in the stratify macro i.e. options.

macro variable
default value
needed when
meaning

DATA
&syslast
mandatory
input data
OUT
&data
mandatory
output data
OUTCOMES

MODE = m
outcome events input data
EVENTDAT


outcome events output data
EVENTTIME
eventtime
mandatory
time of outcome event
SUBJECT

OUTCOMES or EXPDATS used
person ID for record linkage
TIME
time
zrtf-stmt
time of exposure events
EXPEVENT
expevent
zrtf-stmt
exposure event
VALUE
value
zrtf-stmt v = v
exposure event attribute, numeric
VALUEC
valuec
zrtf-stmt v = cv
exposure event attribute, character
BIRTHDATE
birthdate
zrtf-stmt v = a
birth date
SCALE
365.25
mandatory
scale relation between time units for time points and cut points/PYRS
GRANULARITY
1
MODE = s,c,m
follow-up ends at EVENTTIME + GRANULARITY
EVENTTYPE
eventtype
MODE = c,i,m
type of outcome
NOEVENTVALUE

MODE = c,i,m
value of eventtype for person-time
MODE
s(ing(le))
mandatory
other values =
c(omp(eting))
i(ntens(ity))
m(ult(iple))
when and how follow-up ends
METHOD
fst
mandatory
other values =
arr
sum
chunk
noagg
method of aggregation or no aggregation (noagg)
CHUNKSIZE
5000
METHOD = chunk
see [8]

Rostgaard Epidemiologic Perspectives & Innovations 2008 5:7   doi:10.1186/1742-5573-5-7