ArticlePloS one2021
Association between alcohol and crack: Prevalence, effects, associated factors and experiences of combined use.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Is there a relationship between abuse of alcohol and illicit drugs seen in hair results?Drug testing and analysis · 2025Article
- A Review of Cardiovascular Diseases in Substance Use Disorders: Current Knowledge and Future Perspectives.Addiction & health · 2025Review
- Alarming patterns of moderate and high-risk alcohol use among transgender women in Goiás, Central Brazil.Frontiers in public health · 2024Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo estimate the prevalence and factors associated with the effect of alcohol on crack cocaine use and to analyze experiences related to combined use. Materials and methods: sequential mixed methods (qualitative and quantitative) research, carried out between August 2014 and August 2015 with people who use crack. In the quantitative approach, a cross-sectional study was conducted with 1,062 participants. Factors associated with "alcohol use with the effect of increasing the effect of crack/crack craving" were estimated by multiple regression. In the qualitative approach, 39 interviews were conducted using Bardin's content analysis technique.
results871 (82.0%) participants reported consuming alcohol, among them, 668 (76.7%) used alcohol combined with crack: 219 (32.8%) reported feeling an effect of reduction in paranoia and/or crack craving and 384 (57.5%) reported feeling an increase in the effect of crack and in the craving to consume the drug. This relationship was also observed in the narratives of the people who use crack, with the possibility of a cyclic effect of consumption of the two substances. Those who related alcohol use to the effect of increasing crack craving (384) were more likely to use alcohol before crack (OR: 1.81; 95%CI: 1.13-2.89); to consume more than 20 stones daily (OR: 1.48; 95%CI: 1.01-2.16); to remain in abstinence from crack for less than one month (OR: 3.20; 95%CI: 1.91-5.35); to use dependence treatment services (OR: 1.85; 95%CI: 1.26-2.71); and to commit physical violence (OR:1.67; 95%CI:1.08-2.56).
conclusionThe findings of this study indicate that the modulation of the effect of alcohol use on crack cocaine depends on the moment when the drugs are consumed, and the use of alcohol before crack consumption is associated with characteristics that suggest a greater vulnerability to patterns of harmful crack use. Even though combined use is referred to as a way of reducing the negative effects of crack, the damage of this association may be greater than its possible benefits.
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