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Table 1 Simple macro variables in the stratify macro i.e. options.

From: Methods for stratification of person-time and events – a prerequisite for Poisson regression and SIR estimation

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]