intEST                  Returns the estimates of for an unspecified
                        interaction model
linLIN                  Linear regression interaction estimates
loglinHR                Linear interaction HR
loglinOR                Linear interaction OR
plotINT                 Plot the result of HR, OR or linear estimates
rcsHR                   Restricted cubic spline interaction HR
rcsLIN                  Restricted cubic spline interaction linear
                        estimates
rcsOR                   Restricted cubic spline interaction OR
umaru                   UMARU IMPACT Study data
