# Start Date to Use for Subject Duration

This option is used to specify the date for determining the length of the response bar values.

This option uses chosen demographic (DM or ADSL) study start date variables and subjects are automatically sorted by length of duration on study on the Y-axis (Note: You can also choose to Group Subjects by Treatment Variable. Bars are colored (default a gray scale theme) by the values of specified treatment.

Available options are listed in the following table:

Option: | Select when you want to:
Subject Reference Start Date |
| • | Use the reference start date (RFSTDTC) as the start date.
Date of First Study Treatment |
| • | Use the date of the first study treatment (RFXSTDTC) as the start date.

Note: Date information is typically taken from RS. If, however, there is no date information in RS, these reports merge RS and SV by USUBJID and VISIT/VISITNUM and the SV dates are used.

### To Specify an Start Date Variable:

| 8 | Make a selection using the drop-down menu.