NSWEDEN_RH_OVARIECT

IF V13_5AB=1 THEN RH_OVARIECT=2;

IF V13_5LA=1 THEN RH_OVARIECT=3;

V13_5AB/LA is the ma_V13_5AB/LA in the variable list

MORGAM_RH_OVARIECT

The RH_OVARIECT variable is defined using the MORGAM variables REMENOP and MENOP, and the CHANCES variable SEX.

REMENOP
If you have stopped having monthly periods was it because of
1 = hysterectomy, alone
2 = hysterectomy, oophorectomy unknown
3 = bilateral oophorectomy with or without hysterectomy
4 = menopause
8 = irrelevant (MENOP on Form 20 = 1, 2 or 8)
9 = insufficient data

MENOP
Are you still having monthly periods?
1 = yes, as usual
2 = yes, but irregularly
3 = no
8 = not relevant
9 = insufficient data

CHANCES:RH_OVARIECT
Has the woman ever had her ovaries removed (either one or both)?
0 = No
1 = Unilateral
2 = Bilateral
3 = Unknown unilateral or bilateral
9 = Missing/insufficient data. Also code 9 if SEX=1 (for males)

If SEX = 2 (FEMALE), the following rule is used to define RH_OVARIECT:

"(IL)" in the table indicates an illogical combination of MENOP and REMENOP. Records with such coding are extremely rare in the MORGAM data.

If SEX = 1 (MALE), 9 is coded for RH_OVARIECT.

NOTE: Possible unilateral ovariectomy is coded as "no ovariectomy".

ESTHER_RH_OVARIECT

RH_OVARIECT = p_ovar;
if RH_OVARIECT = . then RH_OVARIECT = 9;
if sex = 1 then RH_OVARIECT = 9;

Source of p_ovar is participant's questionnaire at baseline and 2-year follow-up, 5-year follow-up and [8-year follow-up|ESTHER^8-year FUP_participant's questionnaire.xlspdfquestionnaires.

p_ovar is derived from F26OVAR at baseline and if in the follow-up questionnaire the respondent also reported a oophorectomy before the date of inclusion in the study, then it was also included in the p_ovar variable.

CR_EPIC_RH_OVARΙECT

The EPIC variable OVARIECT was used for the production of RH_OVARIECT according to the following definition and rule.

EPIC var definition(s):

OVARIECT: EPIC elderly variable showing (1 or both) ovaries' removal  (1=yes, 0=no)

Coding rule:
Variable RH_OVARIECT shows if the person had ever had 1 or both ovaries removed and is identical to OVARIECT.

Coding rule in STATA:
-gen RH_OVARIECT = OVARIECT

-replace RH_OVARIECT=9 if RH_OVARIECT==.