5. Conclusion
In conclusion, the peer-led BASICS intervention was effective in changing alcohol consumption among Spanish university students in the short term. Nursing students positively impacted the drinking pattern of their peers, achieving significant decreases in the amount of alcohol consumption, binge drinking episodes, peak BAC, and alcohol-related consequences. Nursing undergraduates can be considered a great asset for health promotion at the university setting. Future studies are needed to determine the long-term effectiveness of peer-led BASICS interventions.