days between (also minutes, hours, weeks, months, years)

days between … and calculates the number of days between two particular episodes. Similarly for minutes, hours, weeks, months, years. The singular forms minute between, hour between, day between, month between and year between can also be used.

For example, given the following case fragment,

           01 Jun 03    20 Jun 03    30 Jun 03    15 Oct 03    02 Nov 03
HDL           2.0          2.1          2.2          2.5          1.9
LDL                        6.2*         5.0*                      3.9
Trig          3.6                                    3.6
LipidDrug     N                         Y            Y

at least 15 days between most recent Trig and most recent HDL

more than 2 weeks between most recent Trig and most recent HDL

less than 1 year between most recent Trig and most recent HDL