1.5 Variable Ranges
- All date, integer and numeric values should have ranges specified. These should correspond to inclusion and exclusion criteria for your study, or natural values the variable can take. If you don’t know the upper limit (ie of a biomarker), then put in the maximum reasonable value. Values above this will be flagged and you can adjust the maximum to include them if you wish.
The Minimum and Maximum can be:
- values (ie 40)
- variables names (if you want the minimum date of death to be DxDate for example)
- for date variables you can enter
todayto allow all dates up to the date of data entry - for all other dates use the format
1-Jan-2023to avoid ambiguity