MORGAM_SMO_NUMPIPE

The SMO_NUMPIPE variable is defined using the MORGAM variable PIPE and the CHANCES variable SMO_STAT_DAILY:

If SMO_STAT_DAILY = 1 or 2, then SMO_NUMPIPE=0.
If SMO_STAT_DAILY = 3 or 9, then:

In some MORGAM Centres, the local question(s) from which the MORGAM data was extracted deviated from the MORGAM question. E.g. in some cohorts, pipe and cigar smoking was included in the question. For details of the deviations, see the MORGAM smoking data assessment.

EPIC_SMO_NUMPIPE

The variables N_PIPE, SMOKE_ST were used for the production of SMO_NUMPIPE according to the following definition and rule.

EPIC var definition(s):

N_PIPE: Epic elderly Greece variable showing number of pipes smoked per week

SMOKE_ST: Epic elderly variable showing smoking status (1=never, 2=former, 3=smoker, 4=unknown)

Coding rule:
Variable SMO_NUMPIPE shows number of pipes smoked per week. Is identical to N_PIPE.

If the person has been a former (SMOKE_ST=2) or a non smoker (SMOKE_ST=1) then SMO_NUMPIPE is equal to 0.

Otherwise SMO_NUMPIPE is coded as missing (9999).

Coding rule in STATA:
-gen SMO_NUMPIPE = N_PIPE

-replace SMO_NUMPIPE = 0 if SMOKE_ST==1 | SMOKE_ST==2

-recode SMO_NUMPIPE .=9999