CTN Outcomes, Treatments, and Endpoints
Combine Multiple Simple Study Design "Lattices"
Count Periods of Substance Use / Abstinence
Detect Visits before Matching a Fuzzy Sub-Pattern
Detect a Consecutive Sub-Pattern
Naively Impute Missing Visits
Measure the Length of the Longest Abstinent Period
Measure Length of Use Pattern before Dropout
Recode Missing or Ambiguous UDS in a Subject Use Pattern
View a Pattern through a Study Design "Lattice"
Weight Visits in a Subject Use Pattern
The Clinical Trials Network (CTN) of the U.S. National Institute of Drug Abuse sponsored the CTN-0094 research team to harmonize data sets from three nationally-representative clinical trials for opioid use disorder (OUD). The CTN-0094 team herein provides a coded collection of trial outcomes and endpoints used in various OUD clinical trials over the past 50 years. These coded outcome functions are used to contrast and cluster different clinical outcome functions based on daily or weekly patient urine screenings. Note that we abbreviate urine drug screen as "UDS" and urine opioid screen as "UOS". For the example data sets (based on clinical trials data harmonized by the CTN-0094 research team), UDS and UOS are largely interchangeable.