Effectiveness of toughened glassware in terms of reducing injury in bars: A randomised controlled trial

摘要

Objective - To evaluate the effectiveness, in terms of injury prevention, of toughened pint glassware in bars. Design - Randomised controlled trial. Setting - A random sample of 57 bars in South Wales, West Midlands, and West of England. Subjects - A total of 1229 bar workers. Intervention - Complete replacement of pint glasses with annealed (control) or toughened (intervention) glassware. Main outcome measures - Bar staff injuries recorded monthly: number, site, and severity (lifestyle impact; treatment need) of injuries. Results - Ninety eight bar staff experienced 115 injuries: 43 in the control group, 72 in the intervention group. Adjusting for people at risk gave a relative risk (RR) of 1.48 (confidence interval (CI) 1.02 to 2.15). Similarly, adjusting for hours worked gave RR 1.57 (CI 1.08 to 2.29). Thus, injury rate was 60% higher in the intervention group (p