Cannabis use is common in primary care, with dependence risks

[Prevalence of cannabis use in Primary Care].

Anales del sistema sanitario de Navarra • • Highly Relevant
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AI Summary

This cross-sectional study examined cannabis use among adults aged 18–45 attending three primary-care centres in the Barcelona metropolitan area. Of 221 participants, 53.4% had used cannabis at least once, and the average age of initiation was 18.4 years. Men were more likely than women to report cannabis use after adjusting for age and socioeconomic status.

Recent use was also common: 22.9% had used cannabis during the previous three months. Among lifetime users, 25.4% had a moderate risk of dependence according to the ASSIST screening tool; among those who had used cannabis recently, this figure was 81.5%. Moderate dependence risk was more frequent among people with lower educational attainment. The findings support offering nonjudgmental cannabis screening and brief support in primary care, while recognizing that an ASSIST risk score is not the same as a clinical diagnosis of dependence.

💡 Key Findings

1
53.4% of adults in this Barcelona primary-care sample had used cannabis at least once, beginning at an average age of 18.4 years.
Good
70%
2
Men were more likely than women to report cannabis use after adjustment for age and socioeconomic status (OR 2.11; 95% CI 1.21–3.72).
Good
70%
3
Among lifetime cannabis users, 25.4% had a moderate risk of dependence according to the ASSIST screening tool.
Good
70%
4
Among people who had used cannabis in the previous three months, 81.5% had a moderate ASSIST-assessed dependence risk; this risk was more common among those with lower educational attainment.
Good
65%

📄 Original Abstract

To estimate the prevalence of cannabis use among adults attending primary care, identify the age of initiation and associated sociodemographic characteristics, and describe patterns of dependence risk. A cross-sectional descriptive study was conducted in three primary healthcare centres in the Barcelona metropolitan area. Adults aged 18 - 45 years were selected by simple random sampling. Telephone interviews used cannabis related questions from the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST), validated by the World Health Organization. Cannabis use prevalence and dependence risk were analysed by sociodemographic characteristics using multiple logistic regression. Of 237 individuals contacted, 221 participated (93.25%). Among the participants, 58.8% were women, with a mean age of 33.5 years (SD = 8.1). Overall, 53.4% had used cannabis at least once in their lifetime, with a mean age of initiation of 18.4 years (SD = 4.1). Among lifetime users, 25.4% had a moderate risk of dependence. After adjustment for age and socioeconomic status, cannabis use was more likely among men than women (OR = 2.11; 95% CI: 1.21-3.72). Overall, 22.9% had used cannabis within the previous three months, and 81.5% of these users had a moderate risk of dependence. Moderate dependence risk was more frequent with lower educational attainment. Cannabis use prevalence exceeded that reported in previous studies and was higher in men. One-quarter of lifetime cannabis users had a moderate risk of dependence according to the ASSIST, particularly those with lower educational attainment. Conocer la prevalencia del consumo de cannabis en población adulta, identificar la edad de inicio del consumo y las características sociodemográficas asociadas al mismo, y describir los patrones de riesgo de dependencia. Estudio descriptivo transversal en tres centros de Atención Primaria del área metropolitana de Barcelona. Se seleccionaron personas entre 18 y 45 años mediante muestreo aleatorio simple. Se entrevistaron telefónicamente utilizando las preguntas referentes al consumo de cannabis de ASSIST (Alcohol, Smoking and Substance Involvement Screening Test), validada por la Organización Mundial de la Salud. La relación entre las variables sociodemográficas, la prevalencia de consumo y el riesgo de dependencia se analizó mediante regresión logística múltiple. Aceptaron participar 221 (93,3%) de las 237 personas contactadas; el 58,8% eran mujeres, y la media de edad 33,5 años (DT=8,1). El 53,4% refería haber consumido cannabis alguna vez en la vida, con edad de inicio 18,4 años. (DT=4,1); el 25,4% presentaba un riesgo moderado de dependencia según ASSIST. Las probabilidades de consumo fueron superiores en hombres, tras ajustar por edad y nivel económico (OR=2,11; IC95%: 1,21-3,72). El 22,9% había consumido en los últimos tres meses, y la mayoría (81,5%) presentaba riesgo moderado de dependencia. El riesgo moderado de dependencia aumentó en consumidores con estudios de menor nivel. La prevalencia de consumo de cannabis, superior a las publicadas, fue significativamente mayor en hombres. Una cuarta parte de consumidores presentaban un riesgo moderado de dependencia, mayor a menor nivel de estudios.

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