derived_weeklyTLFBPattern {public.ctn0094extra}

Patient TLFB Opioid Weekly Pattern Data

Description

Show the pattern of positive and negative patient self-report (timeline follow-back, TLFB) results for opioids by patient over the study protocol. Study "Week 1" starts the day after randomization (for patients who were randomized) or the day after signed consent (for patients who were not randomized).

Usage

data(derived_weeklyTLFBPattern)

Format

A tibble with 3,560 rows and columns:

who

Patient ID

startWeek

The start of the "word" is how many weeks before randomization? This should be -4 for most people, but can be as high as -8. Note that week 0 is included, so a value of -4 represents data in the 5th week before randomization; that is, 29-35 days prior to randomization. Most subjects have timeline follow-back data 30 days before consent, and delays between consent and randomization are common.

randWeek1

Week of first randomization (1, if randomized; NA if not)

randWeek2

Week of second randomization (only for CTN-0030)

endWeek

The end of the "word" is how many weeks after randomization? This depends on the study protocol, but should be close to 16 or 24 weeks for most subjects.

Baseline

A character string of symbols from startWeek to the last week before randWeek1. Symbols are as defined in Phase_1.

Phase_1

A character string of symbols from randWeek1 to endWeek (for subjects from CTN-0027 and CTN-0051) or the last week before randWeek2 (for CTN-0030). These symbols are: "+" = the subject reported the use of an opioid for two or more days in that week; "-" = the subject did not report use of an opioid in that week; "*" = the subject reported one day of opioid use in that week; "o" if the subject was supposed to report TLFB but did not; and "_" to represent weeks wherein the subject was not scheduled to provide TLFB (for example, more than 30 days before randomization).

Phase_2

A character string of symbols from randWeek2 to endWeek for subjects from CTN-0030 only. Symbols are as defined in Phase_1.

Details

This data set contains a "word" describing weekly non-study opioid use patterns as reported by the subject in TLFB. Based on the substances reported by the subjects, our list of substances classified as an opioid is: non-study Buprenorphine, non-study Methadone, heroin, and "opioids" (which includes Oxymorphone, Opium, Fentanyl, Hydromorphone, Codeine, Suboxone, Tramadol, Morphine, Hydrocodone, and Oxycodone). TLFB reporting indicating the presence of two or more use days of these substances will be marked with "+" for that week. TLFB results positive for these substances for 0 days will be marked with "-". TLFB results positive for these substances for 1 day in the week will be marked with "*" for that week. This data set is a derived data set; the script used to create it is "scripts/create_weeklyTLFBPattern_20220511.R".

NOTE: some studies collected more TLFB data than others. Also, all times are marked starting with the week of randomization. We represent the weeks before randomization with "_" if no TLFB data was collected. For subjects who were never randomized, all subsequent protocol weeks are marked as missing ("o").