Agreement between maternal cannabis use during pregnancy according to self-report and urinalysis in a population-based cohort: the Generation R Study.
Eur Addict Res
; 17(1): 37-43, 2011.
Article
em En
| MEDLINE
| ID: mdl-20975275
ABSTRACT
AIM:
To verify self-reported information on prenatal drug use in urine because reporting in pregnancy is sensitive to stigma and might lead to misclassification.METHODS:
Using semiquantitative immunochemical analysis, the presence of the urinary metabolite (11-nor-Δ9-tetrahydrocannabinol- 9-carboxylic acid) was compared to self-reported prenatal cannabis use. Sensitivity and specificity for self-report and urinalysis outcomes were calculated and Yule's Y was used as an agreement measure.RESULTS:
Urine samples were available for 3,997 pregnant women. Of these women, 92 reported having used cannabis during pregnancy (2.3%) and 71 had positive urine screens (1.8%). In total 35% of the 92 women with self-reported cannabis use also had a positive urine screen. Positive urines were relatively frequent in women reporting cannabis use before pregnancy only (7.6%) and in women with missing information (2.6%). Sensitivity and specificity of urinalysis compared to self-report were 0.46 and 0.98. Sensitivity and specificity of self-report compared to urinalysis were 0.36 and 0.99. Yule's Y amounted to 0.77, indicating substantial agreement between the measures.CONCLUSIONS:
Our findings illustrate the difficulties in obtaining valid information on prenatal cannabis use. To improve the quality of cannabis use data, we suggest a 2-step approach starting with self-report.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
/
8_ODS3_consumo_sustancias_psicoactivas
Base de dados:
MEDLINE
Assunto principal:
Complicações na Gravidez
/
Detecção do Abuso de Substâncias
/
Abuso de Maconha
/
Autorrelato
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Qualitative_research
Limite:
Adult
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Eur Addict Res
Ano de publicação:
2011
Tipo de documento:
Article