EPIC_OSTEOP_FU

Variable OSTEOP_FU shows diagnosis of osteoporosis recorded during follow up. It is created from the variables and coding rules written below.

Var definitions:

OSTEOPFU: Self reported diagnosis of osteoporosis during follow up.

OSTEOP_AGE_FU: age at diagnosis of osteoporosis during follow up.

A_OSTEOPFU: EPIC elderly Greece variable showing age at self reported diagnosis (in years) of osteoporosis recorded during follow up.

Coding rule:
Variable OSTEOP_FU is identical to OSTEOPFU, for the self reported cases of incident osteoporosis.

Furthermore OSTEOP_FU is coded as 9, if incident osteoporosis is unknown.

Furthermore, OSTEOP_FU is equal to 0, for cases of self reported incident osteoporosis, where the age at self reported diagnosis of osteoporosis is unknown.

Coding rule in STATA:

-gen OSTEOP_FU= OSTEOPFU

-replace OSTEOP_FU=9 if OSTEOP_FU==.

-replace OSTEOP_FU=0 if OSTEOP_FU==1 & OSTEOP_AGE_FU==. & A_OSTEOPFU~=.