question::dynamicLM

[liuyishuboo]

Thank you for developing the dynamicLM package. Multiple duplicate monitoring data with missing values, does this package apply? Thank you!

[anyafries]

Duplicated data: For the input data, there must be unique values of id, follow-up time (i.e., patient A can have multiple entries, but they must be at unique follow-up times. For example, covariate values at baseline and at 12 months).

Missing data can be seen in two ways:

• If the missing data is from a time-varying covariate after baseline, the most recent non-missing entry will be used.
• If the missing data is from a fixed covariate or there is no prior non-missing entry for a longitudinal covariate, then the model will drop that patient during model fitting.