tlfb {public.ctn0094data}

Timeline Followback (TLFB) Drug Use Information

Description

This is self-reported drug use. The values are the result of extensive processing of free text as well as structured values. These substances are group grouped as opioids: Codeine, Fentanyl, Hydrocodone, Merperidine, Oxycodone, Oxymorphone, Propoxyphene. NOTE: Records where people self-reported the study drug after it was prescribed have been removed from this file. The all_drugs dataset contains these nebulous records. See the vignette Harmonization Information for more information.

Usage

data(tlfb)

Format

A tibble with 237,778 rows and 3 variables:

who

Type:	integer
Description:	Patient ID

what

Type:	factor (First/Reference level = Alcohol)
Description:	Text description of drugs; for more information, see Harmonization Information
Levels:	Alcohol, Amphetamine, Analgesic, Antibiotic, Antidepressant, Antiemetic, Antihistamine, Antipsychotic, Benadryl, Benzodiazepine, Buprenorphine, Caffeine, Cathinones, Clonidine, Cocaine, Dextromethorphan, Ghb, Hallucinogen, Heroin, Inhalant, K2, Kratom, Mdma/Hallucinogen, Methadone, Methylphenidate, Muscle Relaxant, Opioid, Pcp, Pseudoephedrine, Sedatives, THC, Unknown

when

Type:	integer
Description:	Study Day