Effectiveness of screening and ultra-brief intervention for hazardous drinking in primary care: pragmatic cluster randomised controlled trial

Context

Hazardous drinking affects about one in five primary‑care patients. The EASY study compared a ≤1‑minute ultra‑brief intervention (Ultra‑BI) with simplified assessment only (SAO) across 40 primary care clinics in Japan. 

Objective

To provide open access to datasets and SAS / R scripts needed to reproduce the published analyses and support future studies including independent participant data meta-analyses.

Datasets and scripts description

RawData.csv – unprocessed participant-level data at baseline, 12 weeks, and 24 weeks

Baseline.xlsx –unprocessed participant-level data at baseline for SAS

data_EASY_cluster_RCT_preprocessed.csv / .RData – processed versions of RawData.csv

Baseline.xlsx –unprocessed participant-level data at baseline for SAS 

Scr_Select.csv – flag indicating participants recruited at clinics that restricted screening to patients suspected of hazardous drinking

Six analysis scripts and one CONSORT-diagram script

Key variables 

participant id, clinic id, allocation group, AUDIT-C score (0–12), total alcohol consumption (grams per 4 weeks), WHO drinking risk level (DRL), readiness-to-change score, sex, five-year age band, comorbidities, smoking status, visit type, and participant reported recognition of receiving advice.

Reuse potential 

The dataset and scripts enables full replication of the published analyses, and pooled effect estimates in individual participant data meta-analysis.

Ethical consideration

Public data sharing was conducted under IRB-approved written informed consent and public disclosure, with participants given the opportunity to decline data sharing. All data were de-identified prior to release, including the removal of direct identifiers and the aggregation or masking of potentially re-identifiable information.