Repeat participation in annual cross-sectional surveys of drug users and its implications for analysis.
BMC Res Notes
; 11(1): 349, 2018 Jun 04.
Article
em En
| MEDLINE
| ID: mdl-29866161
ABSTRACT
OBJECTIVE:
We sought to establish the extent of repeat participation in a large annual cross-sectional survey of people who inject drugs and assess its implications for analysis.RESULTS:
We used "porn star names" (the name of each participant's first pet followed by the name of the first street in which they lived) to identify repeat participation in three Australian Illicit Drug Reporting System surveys. Over 2013-2015, 2468 porn star names (96.2%) appeared only once, 88 (3.4%) twice, and nine (0.4%) in all 3 years. We measured design effects, based on the between-cluster variability for selected estimates, of 1.01-1.07 for seven key variables. These values indicate that the complex sample is (e.g.) 7% less efficient in estimating prevalence of heroin use (ever) than a simple random sample, and 1% less efficient in estimating number of heroin overdoses (ever). Porn star names are a useful means of tracking research participants longitudinally while maintaining their anonymity. Repeat participation in the Australian Illicit Drug Reporting System is low (less than 5% per annum), meaning point-prevalence and effect estimation without correction for the lack of independence in observations is unlikely to seriously affect population inference.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Drogas Ilícitas
/
Inquéritos e Questionários
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Transtornos Relacionados ao Uso de Substâncias
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Usuários de Drogas
/
Overdose de Drogas
Tipo de estudo:
Clinical_trials
/
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
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Risk_factors_studies
Limite:
Humans
País/Região como assunto:
Oceania
Idioma:
En
Revista:
BMC Res Notes
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Austrália