Literal question
513. DETERMINE MONTHS MARRIED SINCE JANUARY 1997. ENTER 'X' IN COLUMN 4 OF CALENDAR FOR EACH MONTH MARRIED, AND ENTER 'O' FOR EACH MONTH NOT MARRIED/NOT LIVING WITH A MAN, SINCE JANUARY 1997.
FOR WOMEN WITH MORE THAN ONE UNION: PROBE FOR DATE WHEN CURRENT UNION STARTED AND FOR STARTING AND TERMINATION DATES OF PREVIOUS UNIONS.
FOR WOMEN NOT CURRENTLY IN A UNION: PROBE FOR DATE WHEN LAST UNION STARTED AND FOR TERMINATION DATE AND FOR THE STARTING DATE AND TERMINATION DATES OF ANY PREVIOUS UNIONS.