Output times were supplied for ''individual'' predictions using a mixed effects model. Performing predictions using the

[shariari]

Output times were supplied for 'individual' predictions using a mixed effects model. Performing predictions using the ''population'' parameter estimates instead. A groupedData object must be supplied to perform individual estimates. The groupedData object must have an independent variable (such as time). To determine the values of any random effects, the groupedData must have a group variable (such as ID).